(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94
Hydrology, source region, and timing of precipitation are important controls on the climate of the Great Plains of North America and the composition of terrestrial ecosystems. Moisture delivered to the Great Plains varies seasonally and predominately derives from the Gulf of Mexico/Atlantic Ocean wi...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.786675 2023-05-15T15:19:25+02:00 (Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 Tipple, Brett James Pagani, Mark LATITUDE: 24.527300 * LONGITUDE: -88.469300 * DATE/TIME START: 1970-03-22T00:00:00 * DATE/TIME END: 1970-03-22T00:00:00 * MINIMUM ELEVATION: -1793.0 m * MAXIMUM ELEVATION: -1793.0 m 2010-07-30 text/tab-separated-values, 875 data points https://doi.pangaea.de/10.1594/PANGAEA.786675 https://doi.org/10.1594/PANGAEA.786675 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.786675 https://doi.org/10.1594/PANGAEA.786675 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Tipple, Brett James; Pagani, Mark (2010): A 35 Myr North American leaf-wax compound-specific carbon and hydrogen isotope record: Implications for C4 grasslands and hydrologic cycle dynamics. Earth and Planetary Science Letters, 299(1-2), 250-262, https://doi.org/10.1016/j.epsl.2010.09.006 10-94 AGE Carbon Preference Index Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Gulf of Mexico/SCARP Higher plant chain length Leg10 Mass spectrometer Finnigan MAT 253 Sample code/label δ13C carbon dioxide aquatic standard deviation δ Deuterium Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.786675 https://doi.org/10.1016/j.epsl.2010.09.006 2023-01-20T08:55:02Z Hydrology, source region, and timing of precipitation are important controls on the climate of the Great Plains of North America and the composition of terrestrial ecosystems. Moisture delivered to the Great Plains varies seasonally and predominately derives from the Gulf of Mexico/Atlantic Ocean with minor contributions from the Pacific Ocean and Arctic region. For this work, we evaluate long-term relationships for the past ~ 35 million years between North American hydrology, climate, and floral change, using isotopic records and average carbon chain lengths of higher plant n-alkanes from Gulf of Mexico sediments (DSDP Site 94). We find that carbon isotope values (d13C) of n-alkanes, corrected for variations in the d13C value of atmospheric CO2, provide minor evidence for contributions of C4 plants prior to the Middle Miocene. A sharp spike in C4 input is identified during the Middle Miocene Climatic Optimum, and the influence of C4 plants steadily increased during the Late Miocene into the Pleistocene - consistent with other North American records. Chain-length distributions of n-alkanes, indicative of the composition of higher plant communities, remained remarkably constant from 33 to 4 Ma. However, a trend toward longer chain lengths occurred during the past 4 million years, concurrent with an increase in d13C values, indicating increased C4 plant influence and potentially aridity. The hydrogen isotope values (dD) of n-alkanes are relatively invariant between 33 and 9 Ma, and then become substantially more negative (75 per mil) from 9 to 2 Ma. Changes in the plant community and temperature of precipitation can solely account for the observed variations in dD from 33 to 5 Ma, but cannot account for Plio-Pleistocene dD variations and imply substantial changes in the source region of precipitation and seasonality of moisture delivery. We posit that hydrological changes were linked to tectonic and oceanographic processes including the shoaling and closure of the Panamanian Seaway, amplification of North Atlantic ... Dataset Arctic North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Arctic Pacific ENVELOPE(-88.469300,-88.469300,24.527300,24.527300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
10-94 AGE Carbon Preference Index Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Gulf of Mexico/SCARP Higher plant chain length Leg10 Mass spectrometer Finnigan MAT 253 Sample code/label δ13C carbon dioxide aquatic standard deviation δ Deuterium |
spellingShingle |
10-94 AGE Carbon Preference Index Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Gulf of Mexico/SCARP Higher plant chain length Leg10 Mass spectrometer Finnigan MAT 253 Sample code/label δ13C carbon dioxide aquatic standard deviation δ Deuterium Tipple, Brett James Pagani, Mark (Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
topic_facet |
10-94 AGE Carbon Preference Index Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Gulf of Mexico/SCARP Higher plant chain length Leg10 Mass spectrometer Finnigan MAT 253 Sample code/label δ13C carbon dioxide aquatic standard deviation δ Deuterium |
description |
Hydrology, source region, and timing of precipitation are important controls on the climate of the Great Plains of North America and the composition of terrestrial ecosystems. Moisture delivered to the Great Plains varies seasonally and predominately derives from the Gulf of Mexico/Atlantic Ocean with minor contributions from the Pacific Ocean and Arctic region. For this work, we evaluate long-term relationships for the past ~ 35 million years between North American hydrology, climate, and floral change, using isotopic records and average carbon chain lengths of higher plant n-alkanes from Gulf of Mexico sediments (DSDP Site 94). We find that carbon isotope values (d13C) of n-alkanes, corrected for variations in the d13C value of atmospheric CO2, provide minor evidence for contributions of C4 plants prior to the Middle Miocene. A sharp spike in C4 input is identified during the Middle Miocene Climatic Optimum, and the influence of C4 plants steadily increased during the Late Miocene into the Pleistocene - consistent with other North American records. Chain-length distributions of n-alkanes, indicative of the composition of higher plant communities, remained remarkably constant from 33 to 4 Ma. However, a trend toward longer chain lengths occurred during the past 4 million years, concurrent with an increase in d13C values, indicating increased C4 plant influence and potentially aridity. The hydrogen isotope values (dD) of n-alkanes are relatively invariant between 33 and 9 Ma, and then become substantially more negative (75 per mil) from 9 to 2 Ma. Changes in the plant community and temperature of precipitation can solely account for the observed variations in dD from 33 to 5 Ma, but cannot account for Plio-Pleistocene dD variations and imply substantial changes in the source region of precipitation and seasonality of moisture delivery. We posit that hydrological changes were linked to tectonic and oceanographic processes including the shoaling and closure of the Panamanian Seaway, amplification of North Atlantic ... |
format |
Dataset |
author |
Tipple, Brett James Pagani, Mark |
author_facet |
Tipple, Brett James Pagani, Mark |
author_sort |
Tipple, Brett James |
title |
(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
title_short |
(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
title_full |
(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
title_fullStr |
(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
title_full_unstemmed |
(Table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of DSDP Hole 10-94 |
title_sort |
(table 1) n-alkane distribution, and stable carbon and deuterium isotope ratios of dsdp hole 10-94 |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.786675 https://doi.org/10.1594/PANGAEA.786675 |
op_coverage |
LATITUDE: 24.527300 * LONGITUDE: -88.469300 * DATE/TIME START: 1970-03-22T00:00:00 * DATE/TIME END: 1970-03-22T00:00:00 * MINIMUM ELEVATION: -1793.0 m * MAXIMUM ELEVATION: -1793.0 m |
long_lat |
ENVELOPE(-88.469300,-88.469300,24.527300,24.527300) |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
Supplement to: Tipple, Brett James; Pagani, Mark (2010): A 35 Myr North American leaf-wax compound-specific carbon and hydrogen isotope record: Implications for C4 grasslands and hydrologic cycle dynamics. Earth and Planetary Science Letters, 299(1-2), 250-262, https://doi.org/10.1016/j.epsl.2010.09.006 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.786675 https://doi.org/10.1594/PANGAEA.786675 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.786675 https://doi.org/10.1016/j.epsl.2010.09.006 |
_version_ |
1766349596834922496 |