A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees
Magnetic properties of rocks can be useful for determining paleoenvironmental changes. A dramatic climate change that occurred in the Paleocene-Eocene Thermal Maximum (PETM) modified the environment and, hence, the magnetic properties recorded in the sediments. New paleomagnetic data from marine rec...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2018-11-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/feart.2018.00202/full |
| _version_ | 1811326675460292608 |
|---|---|
| author | Belén Oliva-Urcia Belén Oliva-Urcia Inmaculada Gil-Peña José M. Samsó Ruth Soto Idoia Rosales |
| author_facet | Belén Oliva-Urcia Belén Oliva-Urcia Inmaculada Gil-Peña José M. Samsó Ruth Soto Idoia Rosales |
| author_sort | Belén Oliva-Urcia |
| collection | DOAJ |
| description | Magnetic properties of rocks can be useful for determining paleoenvironmental changes. A dramatic climate change that occurred in the Paleocene-Eocene Thermal Maximum (PETM) modified the environment and, hence, the magnetic properties recorded in the sediments. New paleomagnetic data from marine records of the PETM in the Southern Pyrenean zone displays a variation of the magnetic parameters in four different sections. The magnetic signal reveals a positive excursion of magnetic values starting before the onset of the marly interval of La Faja de las Flores Mb (beginning of the PETM record, Ilerdian) in the Carriata section with a maximum value in the marly interval. A similar magnetic signal is observed in the Bujaruelo section (~10 km south of Carriata at PETM times) that is related directly to the marly interval of Faja de las Flores Mb. However, towards the south, the PETM interval does not appear in the sedimentary record; therefore, in the southern Gallisué section, no magnetic excursion occurs. In the southernmost-studied Entremón section, a positive magnetic excursion occurs in a thin marly interval unrelated to the PETM, and in two lower intervals of the column. All sections were later subjected to deformation during the pyrean orogeny and the three northernmost sections in the regional cleavage front, where pressure solution and remagnetizations have been described. A post-folding remagnetization component is found in the three northern sections. |
| first_indexed | 2024-04-13T14:53:54Z |
| format | Article |
| id | doaj.art-f59617e8faf34782bae84aeed354eb58 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-13T14:53:54Z |
| publishDate | 2018-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-f59617e8faf34782bae84aeed354eb582022-12-22T02:42:31ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632018-11-01610.3389/feart.2018.00202411208A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern PyreneesBelén Oliva-Urcia0Belén Oliva-Urcia1Inmaculada Gil-Peña2José M. Samsó3Ruth Soto4Idoia Rosales5Department of Geology and Geochemistry, Sciences Faculty, Universidad Autonoma de Madrid, Madrid, SpainDepartamento de Ciencias de la Tierra, Universidad Zaragoza, Zaragoza, SpainInstituto Geológico y Minero de España, Madrid, SpainConsulting Geologist, Jaca, SpainInstituto Geológico y Minero de España, Unidad de Zaragoza, Zaragoza, SpainInstituto Geológico y Minero de España, Madrid, SpainMagnetic properties of rocks can be useful for determining paleoenvironmental changes. A dramatic climate change that occurred in the Paleocene-Eocene Thermal Maximum (PETM) modified the environment and, hence, the magnetic properties recorded in the sediments. New paleomagnetic data from marine records of the PETM in the Southern Pyrenean zone displays a variation of the magnetic parameters in four different sections. The magnetic signal reveals a positive excursion of magnetic values starting before the onset of the marly interval of La Faja de las Flores Mb (beginning of the PETM record, Ilerdian) in the Carriata section with a maximum value in the marly interval. A similar magnetic signal is observed in the Bujaruelo section (~10 km south of Carriata at PETM times) that is related directly to the marly interval of Faja de las Flores Mb. However, towards the south, the PETM interval does not appear in the sedimentary record; therefore, in the southern Gallisué section, no magnetic excursion occurs. In the southernmost-studied Entremón section, a positive magnetic excursion occurs in a thin marly interval unrelated to the PETM, and in two lower intervals of the column. All sections were later subjected to deformation during the pyrean orogeny and the three northernmost sections in the regional cleavage front, where pressure solution and remagnetizations have been described. A post-folding remagnetization component is found in the three northern sections.https://www.frontiersin.org/article/10.3389/feart.2018.00202/fullpaleomagnetismmagnetic signalmagnetic mineralsPyreneesremagnetization |
| spellingShingle | Belén Oliva-Urcia Belén Oliva-Urcia Inmaculada Gil-Peña José M. Samsó Ruth Soto Idoia Rosales A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees Frontiers in Earth Science paleomagnetism magnetic signal magnetic minerals Pyrenees remagnetization |
| title | A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees |
| title_full | A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees |
| title_fullStr | A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees |
| title_full_unstemmed | A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees |
| title_short | A Paleomagnetic Inspection of the Paleocene-Eocene Thermal Maximum (PETM) in the Southern Pyrenees |
| title_sort | paleomagnetic inspection of the paleocene eocene thermal maximum petm in the southern pyrenees |
| topic | paleomagnetism magnetic signal magnetic minerals Pyrenees remagnetization |
| url | https://www.frontiersin.org/article/10.3389/feart.2018.00202/full |
| work_keys_str_mv | AT belenolivaurcia apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT belenolivaurcia apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT inmaculadagilpena apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT josemsamso apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT ruthsoto apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT idoiarosales apaleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT belenolivaurcia paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT belenolivaurcia paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT inmaculadagilpena paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT josemsamso paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT ruthsoto paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees AT idoiarosales paleomagneticinspectionofthepaleoceneeocenethermalmaximumpetminthesouthernpyrenees |