[HTML][HTML] Paleobotanical proxies for early Eocene climates and ecosystems in northern North America from middle to high latitudes

CK West, DR Greenwood, T Reichgelt… - Climate of the …, 2020 - cp.copernicus.org
Early Eocene climates were globally warm, with ice-free conditions at both poles. Early
Eocene polar landmasses supported extensive forest ecosystems of a primarily temperate …

Paleobotanical evidence for Mediterranean climates in the western Canadian paleoarctic during the late middle Eocene

CK West, T Reichgelt, AV Reyes… - Paleoceanography …, 2024 - Wiley Online Library
Paleogene age deposits east of the Fifteenmile River, northwest of Dawson City, Yukon,
Canada preserve a diverse high‐latitude fossil flora. Here, we provide new data on the age …

Conifers are a major source of sedimentary leaf wax n-alkanes when dominant in the landscape: case studies from the Paleogene

KM Schlanser, AF Diefendorf, CK West… - Organic …, 2020 - Elsevier
Plant wax n-alkanes are valuable paleoclimate proxies because their carbon (δ 13 C) and
hydrogen (δ 2 H) isotopes track biological and environmental processes. Angiosperms …

High productivity at high latitudes? photosynthesis and leaf ecophysiology in Arctic forests of the Eocene

W Konrad, A Roth‐Nebelsick… - Paleoceanography and …, 2023 - Wiley Online Library
The Arctic forests of the Eocene, which thrived under elevated CO2, a temperate climate,
high precipitation and annually extremely different daylengths, represent a quite spectacular …

On geologic timescales, plant carbon isotope fractionation responds to precipitation similarly to modern plants and has a small negative correlation with pCO2

K Schlanser, AF Diefendorf, DR Greenwood… - … et Cosmochimica Acta, 2020 - Elsevier
Leaf carbon isotope fractionation (Δ leaf) is sensitive to environmental conditions and can
provide insights into the state and evolution of leaf gas-exchange in response to climate and …

Geochemical indications for the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM-2) hyperthermals in terrestrial sediments of the …

L Reinhardt, W von Gosen, A Lückge… - …, 2022 - pubs.geoscienceworld.org
During the late Paleocene to early Eocene, clastic fluvial sediments and coals were
deposited in northern high latitudes as part of the Margaret Formation at Stenkul Fiord …

Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous …

SD Buryak, AV Reyes, CK West… - Geological …, 2024 - pubs.geoscienceworld.org
The Wombat and Giraffe kimberlite pipes in the Lac de Gras kimberlite field (64° N, 110° W)
of the Northwest Territories, Canada, preserve unique post-eruptive lacustrine and paludal …

Biomarker Reconstruction of a High‐Latitude Late Paleocene to Early Eocene Coal Swamp Environment Across the PETM and ETM‐2 (Ellesmere Island, Arctic …

M Blumenberg, BDA Naafs, A Lückge… - Paleoceanography …, 2024 - Wiley Online Library
Abstract The Paleocene‐Eocene Thermal Maximum (PETM) and early Eocene hyperthermal
events were characterized by a Hothouse climate state. Our understanding of the climatic …

Paleogene Paleohydrology of Ellesmere and Axel Heiberg Islands (Arctic Canada) From Palustrine Carbonates

AB Padgett, EG Hyland, CK West… - Paleoceanography …, 2023 - Wiley Online Library
Ancient greenhouse periods are useful analogs for predicting effects of anthropogenic
climate change on regional and global temperature and precipitation patterns. A paucity of …

Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada

M Sudermann, JM Galloway, DR Greenwood… - …, 2021 - Taylor & Francis
The upper Paleocene to lower Eocene Margaret Formation exposed at Stenkul Fiord on
southern Ellesmere Island, Nunavut, Canada, represents a nearly continuous terrestrial …