Results 81 to 90 of about 23,241 (210)

Ichnological insights into deoxygenation across the Cenomanian–Turonian Boundary Oceanic Anoxic Event 2 in the northern extent of Western Interior Seaway (west‐central Alberta)

open access: yesSedimentology, Volume 73, Issue 2, Page 355-390, February 2026.
ABSTRACT In‐depth ichnological and sedimentological analyses of the Cenomanian–Turonian boundary Oceanic Anoxic Event (OAE2) from the Western Interior Seaway of west‐central Alberta reveal a persistent physico‐chemically stressed setting. The interval is characterised by a dominantly diminutive and diminished ichnological assemblage, with familiar ...
Sara K. Biddle, Murray K. Gingras
wiley   +1 more source

Paleogeography

open access: yes, 2015
A paleogeographic understanding of the genesis of a landscape in time and space is needed to collect and understand data for sea-level reconstruction. So-called sea-level index points can be derived from numerous sedimentary environments, but what is their indicative meaning and value?
Vis, G.J.   +6 more
openaire   +2 more sources

New Geochronological Constraints on the Late Palaeozoic Tarija Basin, Southern Bolivia: Tectonic and Palaeoclimatic Implications

open access: yesTerra Nova, Volume 38, Issue 1, Page 9-18, February 2026.
ABSTRACT The Carboniferous‐Permian Tarija basin of southern Bolivia evolved under major tectonic and climatic influence. The timing of transition from glacially influenced to arid conditions, after the Gondwanide tectonic event, has been based mainly on palynological correlations.
Felipe R. Ferroni   +4 more
wiley   +1 more source

Apports terrigènes et sédimentation épicontinentale en régime tropical-équatorial sud-américain (Guyanes, Colombie caraïbe et Pacifique) : paléogéographie et paléoclimatologie depuis le dernier Maximum Glaciaire.

open access: yesPhysio-Géo, 2015
Sedimentary and paleogeographic models of epicontinental deposits are presented on three regions of South America; one stable (Guianas) and two others with neotectonic activity (Caribean and Pacific coasts of Colombia).
Michel Pujos, Ana Pascual
doaj   +1 more source

Connecting the Atlantic Meridional Overturning Circulation to the Southern Ocean Following the Closure of Equatorial Seaways During the Cenozoic

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Global ocean circulation regulates climate and has undergone significant changes over the Cenozoic. Today, the Atlantic Meridional Overturning Circulation (AMOC) is driven by North Atlantic Deep Water (NADW) formation and Southern Ocean upwelling.
Erwan Pineau   +7 more
wiley   +1 more source

Paleogeography of Tours Lake [PDF]

open access: yes, 2015
Розглядаються зміни геолого-структурного стану території розташування Турського озера впродовж фанерозою. Реконструйовані палеогеографічні умови його формування протягом неоплейстоцену.Corers changes geological and structured the territory location Lake ...
Zaleskyi, Ivan I.   +3 more
core  

Reports and Maps of the Geological Survey Released Only in the Open Files, 1966 [PDF]

open access: yes, 1967
There is a reference to the Espey "Some effects on urbanization on storm runoff, Waller Creek".Waller Creek Working ...
Brett, George W.   +2 more
core   +1 more source

Altered Ocean Temperature Gradients Are Key to Miocene South Asian Monsoon Evolution

open access: yesGeophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Indian Ocean sea surface temperature (SST) gradients influence South Asian summer monsoon (SASM) strength. Middle Miocene proxy records show reversed Arabian Sea zonal gradients (warmer west than east) and reduced Indian Ocean meridional gradients compared to today—patterns coupled models cannot reproduce, hindering accurate SASM simulation ...
Xiaoqing Liu, Matthew Huber
wiley   +1 more source

The chronostratigraphy of Late Pleistocene glacial and periglacial aeolian activity in the Tuktoyaktuk Coastlands, NWT, Canada [PDF]

open access: yes, 2006
Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major stratigraphic settings: within a sand unit characterized by ...
Ager   +58 more
core   +2 more sources

Beachrock as a Natural Coastal Resource in Antiquity: Evidence from Southern Israel

open access: yesJournal of Marine Science and Engineering
Beachrock is a sedimentary rock that forms rapidly through the cementation of beach-associated clasts by calcium carbonate within the intertidal zone.
Amir Bar   +5 more
doaj   +1 more source

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