Richard J Cruz
Biographic Data
| ID | 5597337 |
|---|---|
| NAME | Richard J Cruz |
| GIVEN NAMES | Richard J |
| FAMILY NAME | Cruz |
| SIGNATURE | CRUZ R J |
| VERIFIED | No |
| TOTAL WORKS | 4 |
| TOTAL CITATIONS | 26 |
| AUTHOR COUNT | 4 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2012 |
| LATEST PUBLICATION YEAR | 2018 |
| H-INDEX | 3 |
More Rapid 14 C Excursions in the Tree-Ring Record
Two radiocarbon ( 14 C) excursions are caused by an increase of incoming cosmic rays on a short time scale found in the Late Holocene (AD 774–775 and AD 993–994), which are widely explained as due to extreme solar proton events (SPE). In addition, a larger event has also been reported at 5480 BC (Miyake et al. 2017a), which is attributed to a special mode of a grand solar minimum, as well as another at 660 BC (Park et al. 2017). Clearly, other ev…
Chronology and Faunal Remains of the Khayrgas Cave (Eastern Siberia, Russia)
The Khayrgas Cave in Yakutia (eastern Siberia) is one of the most important Upper Paleolithic sites in northern Asia, and has been the subject of extensive 14 C dating and study of mammal bones. The upper part of the cave sequence (Layers 2–4) dates to the Holocene (~4100–8200 BP), and the lower part (Layers 5–7) to the Late Pleistocene (~13,100–21,500 BP). In Layers 2–4, only extant animal species are known; ecologically they belong to a forest-…
High-Level 14 C Contamination and Recovery at Xi'an AMS Center
A sample with a radiocarbon concentration estimated to be greater than 10 5 times Modern was inadvertently graphitized and measured in the Xi'an AMS system last year. Both the sample preparation lines and the ion source system were seriously contaminated and a series of cleaning procedures were carried out to remove the contamination from them. After repeated and careful cleaning as well as continuous flushing with dead CO 2 gas, both systems hav…
High-Level 14C Contamination and Recovery at Xi'an AMS Center
A sample with a radiocarbon concentration estimated to be greater than 10 5 times Modern was inadvertently graphitized and measured in the Xi'an AMS system last year. Both the sample preparation lines and the ion source system were seriously contaminated and a series of cleaning procedures were carried out to remove the contamination from them. After repeated and careful cleaning as well as continuous flushing with dead CO 2 gas, both systems hav…
More Rapid 14 C Excursions in the Tree-Ring Record
Two radiocarbon ( 14 C) excursions are caused by an increase of incoming cosmic rays on a short time scale found in the Late Holocene (AD 774–775 and AD 993–994), which are widely explained as due to extreme solar proton events (SPE). In addition, a larger event has also been reported at 5480 BC (Miyake et al. 2017a), which is attributed to a special mode of a grand solar minimum, as well as another at 660 BC (Park et al. 2017). Clearly, other ev…
Chronology and Faunal Remains of the Khayrgas Cave (Eastern Siberia, Russia)
The Khayrgas Cave in Yakutia (eastern Siberia) is one of the most important Upper Paleolithic sites in northern Asia, and has been the subject of extensive 14 C dating and study of mammal bones. The upper part of the cave sequence (Layers 2–4) dates to the Holocene (~4100–8200 BP), and the lower part (Layers 5–7) to the Late Pleistocene (~13,100–21,500 BP). In Layers 2–4, only extant animal species are known; ecologically they belong to a forest-…
High-Level 14 C Contamination and Recovery at Xi'an AMS Center
A sample with a radiocarbon concentration estimated to be greater than 10 5 times Modern was inadvertently graphitized and measured in the Xi'an AMS system last year. Both the sample preparation lines and the ion source system were seriously contaminated and a series of cleaning procedures were carried out to remove the contamination from them. After repeated and careful cleaning as well as continuous flushing with dead CO 2 gas, both systems hav…
High-Level 14 C Contamination and Recovery at Xi'an AMS Center
A sample with a radiocarbon concentration estimated to be greater than 10 5 times Modern was inadvertently graphitized and measured in the Xi'an AMS system last year. Both the sample preparation lines and the ion source system were seriously contaminated and a series of cleaning procedures were carried out to remove the contamination from them. After repeated and careful cleaning as well as continuous flushing with dead CO 2 gas, both systems hav…
High-Level 14C Contamination and Recovery at Xi'an AMS Center
A sample with a radiocarbon concentration estimated to be greater than 10 5 times Modern was inadvertently graphitized and measured in the Xi'an AMS system last year. Both the sample preparation lines and the ion source system were seriously contaminated and a series of cleaning procedures were carried out to remove the contamination from them. After repeated and careful cleaning as well as continuous flushing with dead CO 2 gas, both systems hav…
Chronology and Faunal Remains of the Khayrgas Cave (Eastern Siberia, Russia)
The Khayrgas Cave in Yakutia (eastern Siberia) is one of the most important Upper Paleolithic sites in northern Asia, and has been the subject of extensive 14 C dating and study of mammal bones. The upper part of the cave sequence (Layers 2–4) dates to the Holocene (~4100–8200 BP), and the lower part (Layers 5–7) to the Late Pleistocene (~13,100–21,500 BP). In Layers 2–4, only extant animal species are known; ecologically they belong to a forest-…
More Rapid 14 C Excursions in the Tree-Ring Record
Two radiocarbon ( 14 C) excursions are caused by an increase of incoming cosmic rays on a short time scale found in the Late Holocene (AD 774–775 and AD 993–994), which are widely explained as due to extreme solar proton events (SPE). In addition, a larger event has also been reported at 5480 BC (Miyake et al. 2017a), which is attributed to a special mode of a grand solar minimum, as well as another at 660 BC (Park et al. 2017). Clearly, other ev…
Geography (4 works) · Radiocarbon dating (4 works) · Archaeology (3 works) · Archaeology and ancient environmental studies (2 works) · Blank (2 works) · Chemistry (2 works) · Contamination (2 works) · Environmental Chemistry (2 works) · Environmental Science (2 works) · Geology (2 works)