22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1
Organic matter in Miocene glacial sediments in Hole 739C on the Antarctic Shelf represents erosional recycled con-tinental material. Various indications of maturity in bulk organic matter, kerogens, and extracts imply that an exposed section of mature organic carbon-rich material was present during...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.5341 http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.612.5341 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.612.5341 2023-05-15T13:32:04+02:00 22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 Thomas J. Mcdonald Mahlon C. Kennicutt Ii Janina K. Rafalska Richard G. Fox The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.5341 http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.5341 http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf text ftciteseerx 2016-01-08T14:34:52Z Organic matter in Miocene glacial sediments in Hole 739C on the Antarctic Shelf represents erosional recycled con-tinental material. Various indications of maturity in bulk organic matter, kerogens, and extracts imply that an exposed section of mature organic carbon-rich material was present during the Miocene. Based on biomarker, n-alkane, and ker-ogen analysis, a massive diamictite of early Eocene/Oligocene age at Hole 739C contains immature organic matter. Vis-ual and pyrolysis analyses of the kerogens suggest a predominance of terrestrial organic matter in all samples from Hole 739C. A reversal of thermal maturities, i.e., more-mature overlying less-mature sections, may be related to redeposition generated from glacial erosion. Siliciclastic fluviatile sediments of Lower Cretaceous age from Hole 741A were analyzed. The organic matter from this hole contains immature aliphatic and aromatic biomarkers as well as a suite of odd carbon number-dominated n-alkanes. Visual examination and pyrolysis analysis of the kerogen suggests that predominantly immature terrestrial or-ganic matter is present at Hole 741A. The similarities between Hole 739C Unit V and Hole 741A suggest that the source of the organic matter in the glacial sediments in Unit V at Hole 739C could be Cretaceous in age and similar to sedi-ments sampled at Hole 741A in Prydz Bay. Text Antarc* Antarctic Antarctica Prydz Bay Unknown Antarctic Prydz Bay The Antarctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Organic matter in Miocene glacial sediments in Hole 739C on the Antarctic Shelf represents erosional recycled con-tinental material. Various indications of maturity in bulk organic matter, kerogens, and extracts imply that an exposed section of mature organic carbon-rich material was present during the Miocene. Based on biomarker, n-alkane, and ker-ogen analysis, a massive diamictite of early Eocene/Oligocene age at Hole 739C contains immature organic matter. Vis-ual and pyrolysis analyses of the kerogens suggest a predominance of terrestrial organic matter in all samples from Hole 739C. A reversal of thermal maturities, i.e., more-mature overlying less-mature sections, may be related to redeposition generated from glacial erosion. Siliciclastic fluviatile sediments of Lower Cretaceous age from Hole 741A were analyzed. The organic matter from this hole contains immature aliphatic and aromatic biomarkers as well as a suite of odd carbon number-dominated n-alkanes. Visual examination and pyrolysis analysis of the kerogen suggests that predominantly immature terrestrial or-ganic matter is present at Hole 741A. The similarities between Hole 739C Unit V and Hole 741A suggest that the source of the organic matter in the glacial sediments in Unit V at Hole 739C could be Cretaceous in age and similar to sedi-ments sampled at Hole 741A in Prydz Bay. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas J. Mcdonald Mahlon C. Kennicutt Ii Janina K. Rafalska Richard G. Fox |
spellingShingle |
Thomas J. Mcdonald Mahlon C. Kennicutt Ii Janina K. Rafalska Richard G. Fox 22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
author_facet |
Thomas J. Mcdonald Mahlon C. Kennicutt Ii Janina K. Rafalska Richard G. Fox |
author_sort |
Thomas J. Mcdonald |
title |
22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
title_short |
22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
title_full |
22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
title_fullStr |
22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
title_full_unstemmed |
22. SOURCE AND MATURITY OF ORGANIC MATTER IN GLACIAL AND CRETACEOUS SEDIMENTS FROM PRYDZ BAY, ANTARCTICA, ODP HOLES 739C AND 741A1 |
title_sort |
22. source and maturity of organic matter in glacial and cretaceous sediments from prydz bay, antarctica, odp holes 739c and 741a1 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.5341 http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf |
geographic |
Antarctic Prydz Bay The Antarctic |
geographic_facet |
Antarctic Prydz Bay The Antarctic |
genre |
Antarc* Antarctic Antarctica Prydz Bay |
genre_facet |
Antarc* Antarctic Antarctica Prydz Bay |
op_source |
http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.612.5341 http://www-odp.tamu.edu/publications/119_SR/VOLUME/CHAPTERS/sr119_22.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766023892023902208 |