Marieke Dechesne
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View article: Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic
Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic Open
During the assembly of Pangea, peri-Gondwanan terranes collided with the eastern and southern margins of Laurentia and brought with them unique detrital zircon U-Pb signatures. Discriminating between individual peri-Gondwanan terranes in t…
View article: No Consistent Shift in Leaf Dry Mass per Area Across the Cretaceous—Paleogene Boundary
No Consistent Shift in Leaf Dry Mass per Area Across the Cretaceous—Paleogene Boundary Open
The Chicxulub bolide impact has been linked to a mass extinction of plants at the Cretaceous—Paleogene boundary (KPB; ∼66 Ma), but how this extinction affected plant ecological strategies remains understudied. Previous work in the Willisto…
View article: The Seamless Integrated Geologic Mapping (SIGMa) extension to the Geologic Map Schema (GeMS)
The Seamless Integrated Geologic Mapping (SIGMa) extension to the Geologic Map Schema (GeMS) Open
First posted December 12, 2022 For additional information, contact: Director, Geosciences and Environmental Change Science CenterU.S. Geological SurveyBox 25046, MS-980Denver, CO 80225-0046 Geologic maps are the fundamental building blocks…
View article: A new stratigraphic framework and constraints for the position of the Paleocene–Eocene boundary in the rapidly subsiding Hanna Basin, Wyoming
A new stratigraphic framework and constraints for the position of the Paleocene–Eocene boundary in the rapidly subsiding Hanna Basin, Wyoming Open
The Paleocene–Eocene strata of the rapidly subsiding Hanna Basin give insights in sedimentation patterns and regional paleogeography during the Laramide orogeny and across the climatic event at the Paleocene–Eocene Thermal Maximum (PETM). …
View article: Peer Review #1 of "Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming (v0.1)"
Peer Review #1 of "Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming (v0.1)" Open
Ecosystem function and stability are highly affected by internal and external stressors.Utilizing paleobotanical data gives insight into the evolutionary processes an ecosystem undergoes across long periods of time, allowing for a more com…
View article: Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming
Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming Open
Ecosystem function and stability are highly affected by internal and external stressors. Utilizing paleobotanical data gives insight into the evolutionary processes an ecosystem undergoes across long periods of time, allowing for a more co…
View article: Peer Review #2 of "Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming (v0.1)"
Peer Review #2 of "Plant and insect herbivore community variation across the Paleocene–Eocene boundary in the Hanna Basin, southeastern Wyoming (v0.1)" Open
Ecosystem function and stability are highly affected by internal and external stressors.Utilizing paleobotanical data gives insight into the evolutionary processes an ecosystem undergoes across long periods of time, allowing for a more com…
View article: EVALUATING CYCLES IN DISTAL FLOODPLAIN DEPOSITION WITHIN THE EARLY PALEOGENE HANNA BASIN, WYOMING, USA
EVALUATING CYCLES IN DISTAL FLOODPLAIN DEPOSITION WITHIN THE EARLY PALEOGENE HANNA BASIN, WYOMING, USA Open
Location MAP (cm/yr) Method MAT ( o C) Method Estimated m level in L17 Hanna Basin Eocene D a. 108+46.9,-32.7 LAA 21.9 ±3.8 LMA 180 Eocene E b. 132+56.9,-39.7 LAA 19.1 ±3.7 LMA 376 JCCS-01 163.24 ±10.8 CALMAG 14.14 ± 3.4 c.MAT PPM 1.0 270 …