Results 81 to 90 of about 6,981 (220)

Paleoproterozoic geology of the Toumodi area, Ivory Coast, 1:100,000

, 2018
Field geological mapping of tropical West Africa is hampered by the variable development of deep regolith and tropical rainforest and this has impeded the progress of geological research.
J. Mortimer (3113262)
core   +1 more source

Occurrence of a Cavity‐Nesting Tropical Swallow Is Associated to Riverbed Lithology

Austral Ecology, Volume 51, Issue 6, June 2026.
ABSTRACT Understanding the factors shaping species distribution is a key challenge in ecology and biogeography. While dispersal limitations, environmental features, and biotic interactions are commonly recognized as key determinants of species abundance and distribution, some species exhibit patchy distributions that remain hard to explain.
Leonardo Esteves Lopes, Fernando Verassani Laureano, Adriano Paglia, Camila Mendes Sá, Fábio Vieira, Gabriele Andreia da Silva, Mariana Neves Moura, Ricardo Camargos de Meireles, Ricardo Solar, Tiago Teixeira Dornas   +9 more
wiley   +1 more source

Sources and possible causes of Paleoproterozoic magmatism in the southern part of the Karelian Craton (Baltic Shield)

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
There is an opinion that Paleoproterozoic magmatism in the Karelian craton of the Baltic Shield is linked solely with the influence of mantle plumes.
Наталья Ивановна Кондрашова, Natalia Kondrashova   +1 more
doaj   +1 more source

Fluid Inclusion Characteristics of Auriferous Quartz Veins in Archean and Paleoproterozoic Greenstone Belts of Eastern and Southern Finland

, 2003
Fluid inclusions in auriferous quartz veins in five deposits in the Archean (2.9–2.7 Ga) and Paleoproterozoic (2.0–1.75 Ga) greenstone belts of eastern and southwestern Finland have been characterized on the basis of their composition, reconstructed ...
Poutiainen, Matti, Partamies, Sami
core   +1 more source

A tale of two microbialites: Stromatolites and microbially induced sedimentary structures

Sedimentology, Volume 73, Issue 4, Page 849-863, June 2026.
ABSTRACT Microbialites are biosedimentary structures built by microbial mats. Five microbialite groups are distinguished: stromatolites, thrombolites, dendrolites, leiloites and microbially induced sedimentary structures (MISS). This contribution discusses the two most abundant microbialite groups in marine settings, stromatolites and MISS.
Nora Noffke, Stanley M. Awramik
wiley   +1 more source

ARCHEAN AND PALEOPROTEROZOIC HISTORY OF ROCK METAMORPHISM IN THE URALS CRUSTAL SEGMENT

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
In the Urals, Archean and Paleoproterozoic formations were found in several polymetamorphic complexes which crop out as relatively small tectonic blocks (within the first thousands sq. km in area).
Александр Михайлович Пыстин, Юлия Ивановна Пыстина, Alexandr Pystin, Yulia Pystina   +3 more
doaj   +1 more source

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, Volume 14, Issue 5, Page 2514-2538, May 2026.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

Cold deep subduction recorded by remnants of a Paleoproterozoic carbonated slab

Nature Communications, 2018
The onset of modern-style plate tectonics remains under debate. Here, Xu et al. report a cold thermal-gradient recorded in an eclogite xenolith in Paleoproterozoic carbonatite from orogen, and propose that modern-style subduction has operated since at ...
Cheng Xu, Jindřich Kynický, Wenlei Song, Renbiao Tao, Zeng Lü, Yunxiu Li, Yueheng Yang, Miroslav Pohanka, Michaela V. Galiova, Lifei Zhang, Yingwei Fei   +10 more
doaj   +1 more source

Is the Ordos Block Archean or Paleoproterozoic in age? Implications for the Precambrian evolution of the North China Craton [PDF]

, 2013
The Ordos Block is a large but poorly exposed crustal segment in the western part of the North China Craton. Little is known about its Precambrian basement rocks and their evolution because of an extensive cover by younger sedimentary rocks.
Wan, Yusheng, Wang, Zejiu, Liu, Dunyi, Du, Lilin, Liu, Shoujie, Wilde, Simon, Sun, Liuyi, Xie, Hangqiang, Kröner, Alfred, Yang, Hua, Ma, Mingzhu, Geng, Yuansheng, Dong, Chunyan   +12 more
core   +1 more source

DataSheet1_Tectonic Juxtaposition of Two Independent Paleoproterozoic Arcs by Cenozoic Duplexing in the Arun Tectonic Window of the Eastern Nepalese Himalaya.DOCX

, 2022
The tectonic evolution of the Himalayan orogenic belt before Cenozoic convergence is important to understand its modern structural framework. There is still controversy regarding the tectonic history of the lower Lesser Himalaya Sequence (LHS) in the ...
Songjian Ao (7335755), Saunak Bhandari (11138066), Rui Li (4631), Karel Schulmann (2842937), Wenjiao Xiao (2816182), Qigui Mao (11640707), Dongfang Song (7335758), Zhou Tan (223704), Hao Wang (39217)   +8 more
core   +1 more source