Alexander K Rogers
Biographic Data
| ID | 4044784 |
|---|---|
| NAME | Alexander K Rogers |
| GIVEN NAMES | Alexander K |
| FAMILY NAME | Rogers |
| SIGNATURE | ROGERS A K |
| AFFILIATIONS | Maturango Museum |
| ORCID | 0000-0001-8654-0742 |
| VERIFIED | Yes |
| TOTAL WORKS | 21 |
| TOTAL CITATIONS | 84 |
| AUTHOR COUNT | 21 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2006 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Structural Water Content and Hydration Rates for Mount Hicks, Truman-Queen, Eureka Dunes Unknown-1, and Saline Obsidians
Obsidian hydration dating (OHD) has become a commonly employed method for establishing chronology at archaeological sites containing obsidian flaked-stone components. Since its initial archaeological application, methodological advancements have refined the OHD process increasing its accuracy and precision. It is now well established that intrinsic water content coupled with temperature account for most of the observed variation in the rate of hy…
Obsidian hydration dating by infrared transmission spectroscopy
The obsidian dating method converts the quantity of diffused molecular water within a near‐surface hydration layer to elapsed time using an experimentally derived diffusion coefficient predicted from the structural water content of the glass. Infrared spectroscopic transmission measurements on transparent archaeological samples record vibrational responses of water bands in the near‐infrared region, permitting determination of structural water co…
Defining the Central Mountains Archaic
This second volume of the Alta Toquima trilogy situates Monitor Valley archaeology within the Central Mountains Archaic, introduced here as a taxonomic equivalent to the better-known Lovelock culture, Fremont complex, and the Virgin Branch of Ancestral Puebloans. This analysis integrates Monitor Valley into the broader Intermountain West using seven multiscalar time slices that address paleoclimatic and cultural change from the Late Pleistocene/E…
Obsidian Hydration Dating
Obsidian hydration dating (OHD) is a method of computing archaeological ages based on measuring water absorption by obsidian artifacts, and is widely used in the western United States. This paper provides a single resource for the OHD user, including advances over the past decade. We describe obsidian mineralogy as it affects OHD; the effects of structural water content on hydration; the mathematical form of the hydration law; methods to control …
Beyond Ethnography and Beneath the Bedrock Mortars
Rock Camp (CA-SBR-342) in the San Bernardino Mountains has been regarded as a seasonal Late Prehistoric Complex acorn processing base camp since it was excavated in the 1960s. Reanalysis of its collections and new investigations at the nearby Willow Creek Crossing sites permit reevaluation of archaeological models for the Transverse Ranges of southern California and the adjacent Mojave Desert. Diagnostic artifacts, site structure, and obsidian hy…
A molecular model for obsidian hydration dating
Obsidian Hydration Dating of Proposed Paleoindian Artifacts from Tulare Lake, California
In this article, we report an obsidian hydration dating (OHD) analysis of 32 obsidian artifacts from the Witt Archaeological Locality in Tulare County, California. The artifacts (Western stemmed points, concave base points, crescents) were recovered from agricultural contexts, where provenience is indeterminate. Effective hydration temperature (EHT) was computed from local meteorological records. Hydration rates were based on geochemical source a…
Material conveyance in the Southern California Bight
Inhabited by Native Americans for at least 13,000 years, California’s Channel Islands were isolated from the adjacent mainland throughout the Quaternary. A rich archaeological record demonstrates that island peoples thrived for millennia, with access to abundant marine and terrestrial resources. Exchange with mainlanders for various goods is well documented, with long-distance material conveyance occurring very early and intensifying later in tim…
Variability in obsidian structural water content and its importance in the hydration dating of cultural artifacts
Fluted and Basally Thinned Concave-Base Points of Obsidian in the Borden Collection from Inyo County, Alta California
This article describes, classifies, and provides the calculated ages of 14 basally thinned and fluted points of obsidian in the Borden collection from Rose Valley in southern Inyo County, California. With the exception of one item of Fish Springs obsidian, the specimens are all made of glass from geologic subsources in the Coso Volcanic Field. Typologically, the fragmentary and reworked artifacts appear to represent Clovis, or perhaps Clovis-deri…
Protocols for laboratory hydration of obsidian, and their effect on hydration rate accuracy
Calibrations for the determination of water species in bulk and hydrated obsidian by infrared photoacoustic spectroscopy
Transient and equilibrium solubility of water in rhyolitic glass
Unreliability of the induced obsidian hydration method with abbreviated hot-soak protocols
An archaeologically validated protocol for computing obsidian hydration rates from laboratory data
Accuracy of obsidian hydration dating based on obsidian–radiocarbon association and optical microscopy
Obsidian hydration dating
Field data validation of an algorithm for computing obsidian effective hydration temperature
Effective hydration temperature of obsidian
Induced hydration of obsidian
Diversion Dam Cave (10-AA-99)
In this article we describe the results of excavation at the Diversion Dam Cave (10-AA-99) near Boise, Idaho, sponsored by the Bureau of Reclamation. Although the site has been heavily impacted over the years by illegal digging and urban encroachment, the data from these excavations confirmed that some deposits are intact. Radiocarbon data suggest a Paleoindian occupation, prior to 9220 ± 100 RCYBP and as far back as approximately 12,000 RCYBP. N…
Effective hydration temperature of obsidian
An archaeologically validated protocol for computing obsidian hydration rates from laboratory data
Obsidian hydration dating
Accuracy of obsidian hydration dating based on obsidian–radiocarbon association and optical microscopy
Variability in obsidian structural water content and its importance in the hydration dating of cultural artifacts
Unreliability of the induced obsidian hydration method with abbreviated hot-soak protocols
Field data validation of an algorithm for computing obsidian effective hydration temperature
Induced hydration of obsidian
Defining the Central Mountains Archaic
This second volume of the Alta Toquima trilogy situates Monitor Valley archaeology within the Central Mountains Archaic, introduced here as a taxonomic equivalent to the better-known Lovelock culture, Fremont complex, and the Virgin Branch of Ancestral Puebloans. This analysis integrates Monitor Valley into the broader Intermountain West using seven multiscalar time slices that address paleoclimatic and cultural change from the Late Pleistocene/E…
Obsidian hydration dating by infrared transmission spectroscopy
The obsidian dating method converts the quantity of diffused molecular water within a near‐surface hydration layer to elapsed time using an experimentally derived diffusion coefficient predicted from the structural water content of the glass. Infrared spectroscopic transmission measurements on transparent archaeological samples record vibrational responses of water bands in the near‐infrared region, permitting determination of structural water co…
A molecular model for obsidian hydration dating
Obsidian Hydration Dating of Proposed Paleoindian Artifacts from Tulare Lake, California
In this article, we report an obsidian hydration dating (OHD) analysis of 32 obsidian artifacts from the Witt Archaeological Locality in Tulare County, California. The artifacts (Western stemmed points, concave base points, crescents) were recovered from agricultural contexts, where provenience is indeterminate. Effective hydration temperature (EHT) was computed from local meteorological records. Hydration rates were based on geochemical source a…
Protocols for laboratory hydration of obsidian, and their effect on hydration rate accuracy
Transient and equilibrium solubility of water in rhyolitic glass
Obsidian Hydration Dating
Obsidian hydration dating (OHD) is a method of computing archaeological ages based on measuring water absorption by obsidian artifacts, and is widely used in the western United States. This paper provides a single resource for the OHD user, including advances over the past decade. We describe obsidian mineralogy as it affects OHD; the effects of structural water content on hydration; the mathematical form of the hydration law; methods to control …
Material conveyance in the Southern California Bight
Inhabited by Native Americans for at least 13,000 years, California’s Channel Islands were isolated from the adjacent mainland throughout the Quaternary. A rich archaeological record demonstrates that island peoples thrived for millennia, with access to abundant marine and terrestrial resources. Exchange with mainlanders for various goods is well documented, with long-distance material conveyance occurring very early and intensifying later in tim…
Effective hydration temperature of obsidian
Induced hydration of obsidian
Diversion Dam Cave (10-AA-99)
In this article we describe the results of excavation at the Diversion Dam Cave (10-AA-99) near Boise, Idaho, sponsored by the Bureau of Reclamation. Although the site has been heavily impacted over the years by illegal digging and urban encroachment, the data from these excavations confirmed that some deposits are intact. Radiocarbon data suggest a Paleoindian occupation, prior to 9220 ± 100 RCYBP and as far back as approximately 12,000 RCYBP. N…
Field data validation of an algorithm for computing obsidian effective hydration temperature
Obsidian hydration dating
Accuracy of obsidian hydration dating based on obsidian–radiocarbon association and optical microscopy
An archaeologically validated protocol for computing obsidian hydration rates from laboratory data
Transient and equilibrium solubility of water in rhyolitic glass
Unreliability of the induced obsidian hydration method with abbreviated hot-soak protocols
Calibrations for the determination of water species in bulk and hydrated obsidian by infrared photoacoustic spectroscopy
Protocols for laboratory hydration of obsidian, and their effect on hydration rate accuracy
Variability in obsidian structural water content and its importance in the hydration dating of cultural artifacts
Fluted and Basally Thinned Concave-Base Points of Obsidian in the Borden Collection from Inyo County, Alta California
This article describes, classifies, and provides the calculated ages of 14 basally thinned and fluted points of obsidian in the Borden collection from Rose Valley in southern Inyo County, California. With the exception of one item of Fish Springs obsidian, the specimens are all made of glass from geologic subsources in the Coso Volcanic Field. Typologically, the fragmentary and reworked artifacts appear to represent Clovis, or perhaps Clovis-deri…
Material conveyance in the Southern California Bight
Inhabited by Native Americans for at least 13,000 years, California’s Channel Islands were isolated from the adjacent mainland throughout the Quaternary. A rich archaeological record demonstrates that island peoples thrived for millennia, with access to abundant marine and terrestrial resources. Exchange with mainlanders for various goods is well documented, with long-distance material conveyance occurring very early and intensifying later in tim…
Obsidian Hydration Dating of Proposed Paleoindian Artifacts from Tulare Lake, California
In this article, we report an obsidian hydration dating (OHD) analysis of 32 obsidian artifacts from the Witt Archaeological Locality in Tulare County, California. The artifacts (Western stemmed points, concave base points, crescents) were recovered from agricultural contexts, where provenience is indeterminate. Effective hydration temperature (EHT) was computed from local meteorological records. Hydration rates were based on geochemical source a…
A molecular model for obsidian hydration dating
Beyond Ethnography and Beneath the Bedrock Mortars
Rock Camp (CA-SBR-342) in the San Bernardino Mountains has been regarded as a seasonal Late Prehistoric Complex acorn processing base camp since it was excavated in the 1960s. Reanalysis of its collections and new investigations at the nearby Willow Creek Crossing sites permit reevaluation of archaeological models for the Transverse Ranges of southern California and the adjacent Mojave Desert. Diagnostic artifacts, site structure, and obsidian hy…
Obsidian Hydration Dating
Obsidian hydration dating (OHD) is a method of computing archaeological ages based on measuring water absorption by obsidian artifacts, and is widely used in the western United States. This paper provides a single resource for the OHD user, including advances over the past decade. We describe obsidian mineralogy as it affects OHD; the effects of structural water content on hydration; the mathematical form of the hydration law; methods to control …
Obsidian hydration dating by infrared transmission spectroscopy
The obsidian dating method converts the quantity of diffused molecular water within a near‐surface hydration layer to elapsed time using an experimentally derived diffusion coefficient predicted from the structural water content of the glass. Infrared spectroscopic transmission measurements on transparent archaeological samples record vibrational responses of water bands in the near‐infrared region, permitting determination of structural water co…
Defining the Central Mountains Archaic
This second volume of the Alta Toquima trilogy situates Monitor Valley archaeology within the Central Mountains Archaic, introduced here as a taxonomic equivalent to the better-known Lovelock culture, Fremont complex, and the Virgin Branch of Ancestral Puebloans. This analysis integrates Monitor Valley into the broader Intermountain West using seven multiscalar time slices that address paleoclimatic and cultural change from the Late Pleistocene/E…
Structural Water Content and Hydration Rates for Mount Hicks, Truman-Queen, Eureka Dunes Unknown-1, and Saline Obsidians
Obsidian hydration dating (OHD) has become a commonly employed method for establishing chronology at archaeological sites containing obsidian flaked-stone components. Since its initial archaeological application, methodological advancements have refined the OHD process increasing its accuracy and precision. It is now well established that intrinsic water content coupled with temperature account for most of the observed variation in the rate of hy…
Archaeology and ancient environmental studies (18 works) · Geology (17 works) · Mineralogy (14 works) · Pleistocene-Era Hominins and Archaeology (12 works) · Materials Science (11 works) · Geography (10 works) · Archaeology (9 works) · Chemistry (8 works) · Geology and Paleoclimatology Research (8 works) · Diffusion (7 works)