Achim Brauer
Biographic Data
| ID | 4129489 |
|---|---|
| NAME | Achim Brauer |
| GIVEN NAMES | Achim |
| FAMILY NAME | Brauer |
| SIGNATURE | BRAUER A |
| AFFILIATIONS | GFZ Helmholtz Centre for Geosciences |
| ORCID | 0000-0002-6655-9451 |
| VERIFIED | Yes |
| TOTAL WORKS | 28 |
| TOTAL CITATIONS | 56 |
| AUTHOR COUNT | 28 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1997 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 4 |
Reflections of Late Neolithic–Early Bronze Age environments, land use and pile dwelling activities in a new palynological record from the varved sediments of Lake Mondsee, Austria
Despite fundamental progress in geoarchaeological research in the Austrian Salzkammergut region, there are still many unanswered questions regarding human activity and its relationship to climate change and the diverse environments during prehistoric times. A new palynological record from the varved composite sediment core MO-05 from the south-eastern part of Lake Mondsee (47°49′N, 13°24′E, 481 m above sea level) provides palaeoecological evidenc…
Synchronizing the Western Gotland Basin (Baltic Sea) and Lake Kälksjön (central Sweden) sediment records using common cosmogenic radionuclide production variations
Multi-archive studies of climate events and archive-specific response times require synchronous time scales. Aligning common variations in the cosmogenic radionuclide production rate via curve fitting methods provides a tool for the continuous synchronization of natural environmental archives down to decadal precision. Based on this approach, we synchronize 10 Be records from Western Gotland Basin (WGB, Baltic Sea) and Lake Kälksjön (KKJ, central…
Natural and human-induced ecosystem change in SE Europe since AD 1700 derived from a partially varved sediment record from Lake Vouliagmeni (Greece)
To reconstruct naturally and anthropogenically induced environmental change in SE Europe since the Little Ice Age, we have examined five partially varved sediment cores from coastal Lake Vouliagmeni, Greece. Our reconstructions are based on a multi-proxy approach including microfacies analysis, X-ray fluorescence core scanning, radionuclide dating ( 210 Pb, 137 Cs, and 241 Am), and palynological analysis (pollen, spores, and dinoflagellate cysts)…
Reanalysis of the Atmospheric Radiocarbon Calibration Record from Lake Suigetsu, Japan
Terrestrial plant macrofossils from the sedimentary record of Lake Suigetsu, Japan, provide the only quasi-continuous direct atmospheric record of radiocarbon ( 14 C) covering the last 50 ka cal BP (Bronk Ramsey et al. 2012). Since then, new high precision data have become available on U-Th dated speleothems from Hulu Cave China, covering the same time range (Cheng et al. 2018). In addition, an updated varve-based chronology has also been publish…
Increased frequency of torrential rainstorms during a regional late Holocene eastern Mediterranean drought
Identifying climates favoring extreme weather phenomena is a primary aim of paleoclimate and paleohydrological research. Here, we present a well-dated, late Holocene Dead Sea sediment record of debris flows covering 3.3 to 1.9 cal ka BP. Twenty-three graded layers deposited in shallow waters near the western Dead Sea shore were identified by microfacies analysis. These layers represent distal subaquatic deposits of debris flows triggered by torre…
North Atlantic controlled depositional cycles in MIS 5e layered sediments from the deep Dead Sea basin
The drilled Inter-Continental Drilling Project core at the deeps of the Dead Sea reveals thick sequences of halite deposits from the last interglacial period, reflecting prevailing arid conditions in the lake’s watershed. Here, we examine sequences of intercalating evaporates (halite or gypsum) and fine-detritus laminae and apply petrographic, micro-X-ray fluorescence, and statistical tools to establish in high-temporal resolution the hydroclimat…
Site-specific sediment responses to climate change during the last 140 years in three varved lakes in Northern Poland
Accurate dating and unambiguous chronological correlation using cryptotephras provide a powerful tool to compare the varved sediment records of the lakes Głęboczek (JG), Czechowskie (JC) and Jelonek (JEL) (north-central Poland). For the last 140 years, micro-facies analyses and μ-XRF element scanning at seasonal resolution, as well as bulk elemental analyses (organic matter, carbonate) at sub-decadal to decadal resolution, were conducted for all …
Mid-Holocene humid periods reconstructed from calcite varves of the Lake Woserin sediment record (north-eastern Germany)
Time-series of varve properties and geochemistry were established from varved sediments of Lake Woserin (north-eastern Germany) covering the recent period AD 2010–1923 and the mid-Holocene time-window 6400–4950 varve years before present (vyr BP) using microfacies analyses, x-ray fluorescence (μ-XRF) scanning, microscopic varve chronology, and 14 C dating. The microscopic varve chronology was compared with a macroscopic varve chronology for the s…
Varve microfacies and varve preservation record of climate change and human impact for the last 6000 years at Lake Tiefer See (NE Germany)
The Holocene sediment record of Lake Tiefer See exhibits striking alternations between well-varved and non-varved intervals. Here, we present a high-resolution multi-proxy record for the past ~6000 years and discuss possible causes for the observed sediment variability. This approach comprises microfacies, geochemical and microfossil analyses and a multiple dating concept including varve counting, tephrochronology and radiocarbon dating. Four per…
The role of melting dead ice on landscape transformation in the early Holocene in Tuchola Pinewoods, North Poland
Evidences for centennial dry periods at ~3300 and ~2800 cal. yr BP from micro-facies analyses of the Dead Sea sediments
Laminated lake sediments from the Dead Sea basin provide high-resolution records of climatic variability in the eastern Mediterranean region, which is especially sensitive to changing climatic conditions. In this study, we aim on detailed reconstruction of climatic fluctuations and related changes in the frequency of flood and dust deposition events at ca. 3300 and especially at 2800 cal. yr BP from high-resolution sediment records of the Dead Se…
Effects of changes in land management practices on pollen productivity of open vegetation during the last century derived from varved lake sediments
Pollen productivity is a key parameter to quantify past plant abundances and vegetation openness. In this study we explore how changes in land management influence pollen productivity. We study pollen deposition in largely annually laminated sediments from Lake Tiefer See in the Northeastern German lowlands deposited between AD 1880 and 2010. During this period, land use intensity has increased predominantly through the widespread introduction of…
Early Holocene aeolian dust accumulation in northeast China recorded in varved sediments from Lake Sihailongwan
Integration of the Old and New Lake Suigetsu (Japan) Terrestrial Radiocarbon Calibration Data Sets
The varved sediment profile of Lake Suigetsu, central Japan, offers an ideal opportunity from which to derive a terrestrial record of atmospheric radiocarbon across the entire range of the 14 C dating method. Previous work by Kitagawa and van der Plicht (1998a,b, 2000) provided such a data set; however, problems with the varve-based age scale of their SG93 sediment core precluded the use of this data set for 14 C calibration purposes. Lake Suiget…
The 1.5-ka varved record of Lake Montcortès (southern Pyrenees, NE Spain)
The karstic Lake Montcortès sedimentary sequence spanning the last 1548 yr constitutes the first continuous, high-resolution, multi-proxy varved record in northern Spain. Sediments consist of biogenic varves composed of calcite, organic matter and detrital laminae and turbidite layers. Calcite layer thickness and internal sub-layering indicate changes in water temperature and seasonality whereas the frequency of detrital layers reflects rainfall …
A sedimentary record of Holocene surface runoff events and earthquake activity from Lake Iseo (Southern Alps, Italy)
This study presents a record of Holocene surface runoff events and several large earthquakes, preserved in the sediments of pre-Alpine Lake Iseo, northern Italy. A combination of high-resolution seismic surveying, detailed sediment microfacies analysis, non-destructive core-scanning techniques and AMS 14 C dating of terrestrial macrofossils was used to detect and date these events. Based on this approach, our data shed light on past seismic activ…
New 14 C Determinations from Lake Suigetsu, Japan: 12,000 To 0 Cal BP
Calibration is a fundamental stage of the radiocarbon ( 14 C) dating process if one is to derive meaningful calendar ages from samples' 14 C measurements. For the first time, the IntCal09 calibration curve (Reimer et al. 2009) provided an internationally ratified calibration data set across almost the complete range (0 to 50,000 cal BP) of the 14 C timescale. However, only the last 12,550 cal yr of this record are composed of terrestrial data, le…
The Iberian–Roman Humid Period (2600–1600 cal yr BP) in the Zoñar Lake varve record (Andalucía, southern Spain)
The Iberian–Roman Humid Period (IRHP, 2600–1600 cal yr BP), is the most humid phase of the last 4000 yr in southern Spain as recorded in the sedimentary sequence of Zoñar Lake (37°29′00′′N, 4°41′22′′ W, 300 m a.s.l.). A varve chronology supported by several AMS 14 C dates allows study of the lake evolution at annual scale in response to human impact and climate changes. There are four climate phases within this period: i) gradual transition (2600…
Rapid climate change during the early Holocene in western Europe and Greenland
Based on microfacies analyses of seasonally laminated varved sediments from lake Holzmaar, Germany, we report evidence of decadal-to century-scale climate variability during the early Holocene. The shifts in climate are documented in the thickness variations and changes in the composition of the varves in response to subtle shifts in limnological conditions. The close similarity between the Holzmaar varve record and the GRIP oxygen isotope record…
Tephrochronology of the 100ka lacustrine sediment record of Lago Grande di Monticchio (southern Italy)
The European Lake Drilling Programme (ELDP) from 1996–2001: High-resolution lake sediment records in climate and environment variability studies
Correlation and synchronisation of Lateglacial continental sequences in northern central Europe based on annually laminated lacustrine sediments
A long lacustrine record from the Piànico-Sèllere Basin (Middle-Late Pleistocene, Northern Italy)
Abrupt environmental oscillations during the Early Weichselian recorded at Lago Grande di Monticchio, southern Italy
AMS Radiocarbon and Varve Chronology from the Annually Laminated Sediment Record of Lake Meerfelder Maar, Germany
The Holocene varve chronology of annually laminated sediment sequences from Lake Meerfelder Maar agree for most of the record with dendro-calibrated accelerator mass spectronomy radiocarbon dates from the same site. Only between 9710 and 9950 cal BP does an offset of 240 yr appear between both data sets. At this position, a micro-disturbance in the varve succession has been detected by thin section analyses and was quantified in terms of missing …
Reanalysis of the Atmospheric Radiocarbon Calibration Record from Lake Suigetsu, Japan
Terrestrial plant macrofossils from the sedimentary record of Lake Suigetsu, Japan, provide the only quasi-continuous direct atmospheric record of radiocarbon ( 14 C) covering the last 50 ka cal BP (Bronk Ramsey et al. 2012). Since then, new high precision data have become available on U-Th dated speleothems from Hulu Cave China, covering the same time range (Cheng et al. 2018). In addition, an updated varve-based chronology has also been publish…
Varve microfacies and varve preservation record of climate change and human impact for the last 6000 years at Lake Tiefer See (NE Germany)
The Holocene sediment record of Lake Tiefer See exhibits striking alternations between well-varved and non-varved intervals. Here, we present a high-resolution multi-proxy record for the past ~6000 years and discuss possible causes for the observed sediment variability. This approach comprises microfacies, geochemical and microfossil analyses and a multiple dating concept including varve counting, tephrochronology and radiocarbon dating. Four per…
New 14 C Determinations from Lake Suigetsu, Japan: 12,000 To 0 Cal BP
Calibration is a fundamental stage of the radiocarbon ( 14 C) dating process if one is to derive meaningful calendar ages from samples' 14 C measurements. For the first time, the IntCal09 calibration curve (Reimer et al. 2009) provided an internationally ratified calibration data set across almost the complete range (0 to 50,000 cal BP) of the 14 C timescale. However, only the last 12,550 cal yr of this record are composed of terrestrial data, le…
Integration of the Old and New Lake Suigetsu (Japan) Terrestrial Radiocarbon Calibration Data Sets
The varved sediment profile of Lake Suigetsu, central Japan, offers an ideal opportunity from which to derive a terrestrial record of atmospheric radiocarbon across the entire range of the 14 C dating method. Previous work by Kitagawa and van der Plicht (1998a,b, 2000) provided such a data set; however, problems with the varve-based age scale of their SG93 sediment core precluded the use of this data set for 14 C calibration purposes. Lake Suiget…
Effects of changes in land management practices on pollen productivity of open vegetation during the last century derived from varved lake sediments
Pollen productivity is a key parameter to quantify past plant abundances and vegetation openness. In this study we explore how changes in land management influence pollen productivity. We study pollen deposition in largely annually laminated sediments from Lake Tiefer See in the Northeastern German lowlands deposited between AD 1880 and 2010. During this period, land use intensity has increased predominantly through the widespread introduction of…
A sedimentary record of Holocene surface runoff events and earthquake activity from Lake Iseo (Southern Alps, Italy)
This study presents a record of Holocene surface runoff events and several large earthquakes, preserved in the sediments of pre-Alpine Lake Iseo, northern Italy. A combination of high-resolution seismic surveying, detailed sediment microfacies analysis, non-destructive core-scanning techniques and AMS 14 C dating of terrestrial macrofossils was used to detect and date these events. Based on this approach, our data shed light on past seismic activ…
AMS Radiocarbon and Varve Chronology from the Annually Laminated Sediment Record of Lake Meerfelder Maar, Germany
The Holocene varve chronology of annually laminated sediment sequences from Lake Meerfelder Maar agree for most of the record with dendro-calibrated accelerator mass spectronomy radiocarbon dates from the same site. Only between 9710 and 9950 cal BP does an offset of 240 yr appear between both data sets. At this position, a micro-disturbance in the varve succession has been detected by thin section analyses and was quantified in terms of missing …
Evidences for centennial dry periods at ~3300 and ~2800 cal. yr BP from micro-facies analyses of the Dead Sea sediments
Laminated lake sediments from the Dead Sea basin provide high-resolution records of climatic variability in the eastern Mediterranean region, which is especially sensitive to changing climatic conditions. In this study, we aim on detailed reconstruction of climatic fluctuations and related changes in the frequency of flood and dust deposition events at ca. 3300 and especially at 2800 cal. yr BP from high-resolution sediment records of the Dead Se…
C Ages of Terrestrial Macrofossils from Lago Grande Di Monticchio (Italy)
Lago Grande di Monticchio (Italy) contains long sedimentary records of >75 ka (Zolitschka and Negendank 1996). In a joint European project (Creer and Thouveny 1996), vegetation history and climatic changes for this part of the Mediterranean have been reconstructed (Watts, Allen and Huntley 1996; Watts et al. 1996). In addition to the time scale based on annual laminations and sedimentation rate, tephra layers and pollen spectra, radiocarbon datin…
Site-specific sediment responses to climate change during the last 140 years in three varved lakes in Northern Poland
Accurate dating and unambiguous chronological correlation using cryptotephras provide a powerful tool to compare the varved sediment records of the lakes Głęboczek (JG), Czechowskie (JC) and Jelonek (JEL) (north-central Poland). For the last 140 years, micro-facies analyses and μ-XRF element scanning at seasonal resolution, as well as bulk elemental analyses (organic matter, carbonate) at sub-decadal to decadal resolution, were conducted for all …
Mid-Holocene humid periods reconstructed from calcite varves of the Lake Woserin sediment record (north-eastern Germany)
Time-series of varve properties and geochemistry were established from varved sediments of Lake Woserin (north-eastern Germany) covering the recent period AD 2010–1923 and the mid-Holocene time-window 6400–4950 varve years before present (vyr BP) using microfacies analyses, x-ray fluorescence (μ-XRF) scanning, microscopic varve chronology, and 14 C dating. The microscopic varve chronology was compared with a macroscopic varve chronology for the s…
Rapid climate change during the early Holocene in western Europe and Greenland
Based on microfacies analyses of seasonally laminated varved sediments from lake Holzmaar, Germany, we report evidence of decadal-to century-scale climate variability during the early Holocene. The shifts in climate are documented in the thickness variations and changes in the composition of the varves in response to subtle shifts in limnological conditions. The close similarity between the Holzmaar varve record and the GRIP oxygen isotope record…
C Ages of Terrestrial Macrofossils from Lago Grande Di Monticchio (Italy)
Lago Grande di Monticchio (Italy) contains long sedimentary records of >75 ka (Zolitschka and Negendank 1996). In a joint European project (Creer and Thouveny 1996), vegetation history and climatic changes for this part of the Mediterranean have been reconstructed (Watts, Allen and Huntley 1996; Watts et al. 1996). In addition to the time scale based on annual laminations and sedimentation rate, tephra layers and pollen spectra, radiocarbon datin…
Rapid environmental changes in southern Europe during the last glacial period
Lateglacial calendar year chronology based on annually laminated sediments from Lake Meerfelder Maar, Germany
A long lacustrine record from the Piànico-Sèllere Basin (Middle-Late Pleistocene, Northern Italy)
Abrupt environmental oscillations during the Early Weichselian recorded at Lago Grande di Monticchio, southern Italy
AMS Radiocarbon and Varve Chronology from the Annually Laminated Sediment Record of Lake Meerfelder Maar, Germany
The Holocene varve chronology of annually laminated sediment sequences from Lake Meerfelder Maar agree for most of the record with dendro-calibrated accelerator mass spectronomy radiocarbon dates from the same site. Only between 9710 and 9950 cal BP does an offset of 240 yr appear between both data sets. At this position, a micro-disturbance in the varve succession has been detected by thin section analyses and was quantified in terms of missing …
Correlation and synchronisation of Lateglacial continental sequences in northern central Europe based on annually laminated lacustrine sediments
Tephrochronology of the 100ka lacustrine sediment record of Lago Grande di Monticchio (southern Italy)
The European Lake Drilling Programme (ELDP) from 1996–2001: High-resolution lake sediment records in climate and environment variability studies
Rapid climate change during the early Holocene in western Europe and Greenland
Based on microfacies analyses of seasonally laminated varved sediments from lake Holzmaar, Germany, we report evidence of decadal-to century-scale climate variability during the early Holocene. The shifts in climate are documented in the thickness variations and changes in the composition of the varves in response to subtle shifts in limnological conditions. The close similarity between the Holzmaar varve record and the GRIP oxygen isotope record…
The Iberian–Roman Humid Period (2600–1600 cal yr BP) in the Zoñar Lake varve record (Andalucía, southern Spain)
The Iberian–Roman Humid Period (IRHP, 2600–1600 cal yr BP), is the most humid phase of the last 4000 yr in southern Spain as recorded in the sedimentary sequence of Zoñar Lake (37°29′00′′N, 4°41′22′′ W, 300 m a.s.l.). A varve chronology supported by several AMS 14 C dates allows study of the lake evolution at annual scale in response to human impact and climate changes. There are four climate phases within this period: i) gradual transition (2600…
New 14 C Determinations from Lake Suigetsu, Japan: 12,000 To 0 Cal BP
Calibration is a fundamental stage of the radiocarbon ( 14 C) dating process if one is to derive meaningful calendar ages from samples' 14 C measurements. For the first time, the IntCal09 calibration curve (Reimer et al. 2009) provided an internationally ratified calibration data set across almost the complete range (0 to 50,000 cal BP) of the 14 C timescale. However, only the last 12,550 cal yr of this record are composed of terrestrial data, le…
The 1.5-ka varved record of Lake Montcortès (southern Pyrenees, NE Spain)
The karstic Lake Montcortès sedimentary sequence spanning the last 1548 yr constitutes the first continuous, high-resolution, multi-proxy varved record in northern Spain. Sediments consist of biogenic varves composed of calcite, organic matter and detrital laminae and turbidite layers. Calcite layer thickness and internal sub-layering indicate changes in water temperature and seasonality whereas the frequency of detrital layers reflects rainfall …
A sedimentary record of Holocene surface runoff events and earthquake activity from Lake Iseo (Southern Alps, Italy)
This study presents a record of Holocene surface runoff events and several large earthquakes, preserved in the sediments of pre-Alpine Lake Iseo, northern Italy. A combination of high-resolution seismic surveying, detailed sediment microfacies analysis, non-destructive core-scanning techniques and AMS 14 C dating of terrestrial macrofossils was used to detect and date these events. Based on this approach, our data shed light on past seismic activ…
Early Holocene aeolian dust accumulation in northeast China recorded in varved sediments from Lake Sihailongwan
Integration of the Old and New Lake Suigetsu (Japan) Terrestrial Radiocarbon Calibration Data Sets
The varved sediment profile of Lake Suigetsu, central Japan, offers an ideal opportunity from which to derive a terrestrial record of atmospheric radiocarbon across the entire range of the 14 C dating method. Previous work by Kitagawa and van der Plicht (1998a,b, 2000) provided such a data set; however, problems with the varve-based age scale of their SG93 sediment core precluded the use of this data set for 14 C calibration purposes. Lake Suiget…
The role of melting dead ice on landscape transformation in the early Holocene in Tuchola Pinewoods, North Poland
Evidences for centennial dry periods at ~3300 and ~2800 cal. yr BP from micro-facies analyses of the Dead Sea sediments
Laminated lake sediments from the Dead Sea basin provide high-resolution records of climatic variability in the eastern Mediterranean region, which is especially sensitive to changing climatic conditions. In this study, we aim on detailed reconstruction of climatic fluctuations and related changes in the frequency of flood and dust deposition events at ca. 3300 and especially at 2800 cal. yr BP from high-resolution sediment records of the Dead Se…
Effects of changes in land management practices on pollen productivity of open vegetation during the last century derived from varved lake sediments
Pollen productivity is a key parameter to quantify past plant abundances and vegetation openness. In this study we explore how changes in land management influence pollen productivity. We study pollen deposition in largely annually laminated sediments from Lake Tiefer See in the Northeastern German lowlands deposited between AD 1880 and 2010. During this period, land use intensity has increased predominantly through the widespread introduction of…
Mid-Holocene humid periods reconstructed from calcite varves of the Lake Woserin sediment record (north-eastern Germany)
Time-series of varve properties and geochemistry were established from varved sediments of Lake Woserin (north-eastern Germany) covering the recent period AD 2010–1923 and the mid-Holocene time-window 6400–4950 varve years before present (vyr BP) using microfacies analyses, x-ray fluorescence (μ-XRF) scanning, microscopic varve chronology, and 14 C dating. The microscopic varve chronology was compared with a macroscopic varve chronology for the s…
Varve microfacies and varve preservation record of climate change and human impact for the last 6000 years at Lake Tiefer See (NE Germany)
The Holocene sediment record of Lake Tiefer See exhibits striking alternations between well-varved and non-varved intervals. Here, we present a high-resolution multi-proxy record for the past ~6000 years and discuss possible causes for the observed sediment variability. This approach comprises microfacies, geochemical and microfossil analyses and a multiple dating concept including varve counting, tephrochronology and radiocarbon dating. Four per…
North Atlantic controlled depositional cycles in MIS 5e layered sediments from the deep Dead Sea basin
The drilled Inter-Continental Drilling Project core at the deeps of the Dead Sea reveals thick sequences of halite deposits from the last interglacial period, reflecting prevailing arid conditions in the lake’s watershed. Here, we examine sequences of intercalating evaporates (halite or gypsum) and fine-detritus laminae and apply petrographic, micro-X-ray fluorescence, and statistical tools to establish in high-temporal resolution the hydroclimat…
Site-specific sediment responses to climate change during the last 140 years in three varved lakes in Northern Poland
Accurate dating and unambiguous chronological correlation using cryptotephras provide a powerful tool to compare the varved sediment records of the lakes Głęboczek (JG), Czechowskie (JC) and Jelonek (JEL) (north-central Poland). For the last 140 years, micro-facies analyses and μ-XRF element scanning at seasonal resolution, as well as bulk elemental analyses (organic matter, carbonate) at sub-decadal to decadal resolution, were conducted for all …
Increased frequency of torrential rainstorms during a regional late Holocene eastern Mediterranean drought
Identifying climates favoring extreme weather phenomena is a primary aim of paleoclimate and paleohydrological research. Here, we present a well-dated, late Holocene Dead Sea sediment record of debris flows covering 3.3 to 1.9 cal ka BP. Twenty-three graded layers deposited in shallow waters near the western Dead Sea shore were identified by microfacies analysis. These layers represent distal subaquatic deposits of debris flows triggered by torre…
Reanalysis of the Atmospheric Radiocarbon Calibration Record from Lake Suigetsu, Japan
Terrestrial plant macrofossils from the sedimentary record of Lake Suigetsu, Japan, provide the only quasi-continuous direct atmospheric record of radiocarbon ( 14 C) covering the last 50 ka cal BP (Bronk Ramsey et al. 2012). Since then, new high precision data have become available on U-Th dated speleothems from Hulu Cave China, covering the same time range (Cheng et al. 2018). In addition, an updated varve-based chronology has also been publish…
Geology and Paleoclimatology Research (28 works) · Geography (22 works) · Paleontology (21 works) · Geology (20 works) · Physical geography (20 works) · Sediment (20 works) · Varve (20 works) · Holocene (17 works) · Archaeology and ancient environmental studies (12 works) · Climatology (11 works)