Results 111 to 120 of about 7,875 (277)

Stratigraphic schemes of the Precambrian of the Ukrainian Shield (analytical review)

open access: yesМінеральні ресурси України
The first stratigraphic schemes of the Precambrian of the Ukrainian Shield were compiled in 1926 by V. I. Luchytskyi and D. M. Sobolev, and were subsequently developed by numerous authors until 1967.
V. P. Kyrylyuk
doaj   +1 more source

Stratigraphy and development of the Late Miocene-Early Pleistocene Hawke’s Bay forearc basin

open access: yes, 2004
A Late Miocene-Early Pleistocene mixed carbonate-siliciclastic sedimentary succession about 2 500 m thick in the Hawke’s Bay forearc basin is the focus of a basin analysis. The area under investigation covers 3 500 km2 of western and central Hawke’s Bay.
Nelson, Campbell S.   +2 more
core  

Experimental Investigation of Moisture Movement During Freeze–Thaw Cycles and Its Effect on Physical Rock Weathering in Low‐Porosity Alpine Limestone

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT The progressive weakening of alpine rockwalls through subcritical cracking, driven by repeated low‐magnitude stress processes, plays a key role in alpine rock weathering. Laboratory studies using acoustic emission (AE) monitoring have shown that thermal stresses from freeze–thaw cycling induce crack propagation, with recent work highlighting ...
Andrew Mitchell, Oliver Sass
wiley   +1 more source

Carbonate facies, diagenesis and sequence stratigraphy of an eocene nummulitic seservoir interval (jdeir formation), offshore NW Libya [PDF]

open access: yes, 2006
This study investigates the sedimentology, petrology and depositional environments of a major Early Eocene nummulitic reservoir unit: the Jdeir Formation, from offshore NW Libya in the Mediterranean Sea. This formation is a prolific hydrocarbon-producing
Alhnaish, Abdelhakim S.
core  

Pliocene stable isotope and carbonate stratigraphy at DSDP Holes 85-572C and 85-573A

open access: yes, 1985
Holes 572C and 573A provide high resolution (about 5000-yr. sampling interval) records of oxygen and carbon isotope stratigraphy (Globigerinoides sacculifera) and carbonate stratigraphy for the Pliocene of the equatorial Pacific.
Prell, Warren L   +1 more
core   +1 more source

New data on the Dogger - Cenomanian stratigraphy of Tripolitza series in Central Crete

open access: yesBulletin of the Geological Society of Greece, 2018
Tripolitza series represents the eastern part of the Gavrovo - Tripolitza platform. It outcrops in central and southeastern Peloponnesus, Crete and the Aegean islands. Its stratigraphie column starts with a volcano-sedimentary, clastic sequences (the Tyros beds), of Late Paleozoic to Late Triassic age, followed by a carbonate series of Late Triassic to
openaire   +2 more sources

Spatial Variability of Permafrost and Active Layer Thickness in a Forested Hillslope of the Taiga Shield

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath   +2 more
wiley   +1 more source

An updated chronology for Umbeli Belli and its implications for the Middle and Later Stone Ages

open access: yesSouth African Journal of Science
We present a series of 12 OSL/IRSL dates that revise and complete the chronology of the important Middle (MSA) and Later Stone Age (LSA) site Umbeli Belli in KwaZulu-Natal, South Africa. These dates shift the previous radiometric ages thousands of years
Chantal Tribolo   +3 more
doaj   +1 more source

A Statistical‐Process Hybridized Approach to Modeling Permafrost Distribution in a Boreal Wetland Ecosystem, Whatì, NT, Canada

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT High‐resolution mapping of permafrost in ecologically and topographically complex landscapes remains a major challenge. Existing models of permafrost extent often rely on equilibrium assumptions, which can misrepresent conditions in regions where permafrost persists largely due to ecosystem structure.
Philip P. Bonnaventure   +3 more
wiley   +1 more source

Quaternary stratigraphy of Asia and the Pacific IGCP 296 : ESCAP atlas of stratigraphy XIII, quaternary stratigraphy and paleonvironments of Australia, China, Indonesia, Philippines, Republic of Korea, Thailand and Viet Nam

open access: yes, 1993
This publication, fourth in a series devoted exclusively to the study of Quaternary stratigraphy in the Asia-Pacific region, contains a selection of papers presented at the third and fourth regional meetings of Project 296 of the International Geological
UN.ESCAP
core  

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