Results 51 to 60 of about 2,688 (160)

On the specification of the chronostratigraphic scheme of the Buzko-Rosynskyi block of the Ukrainian Shield

Мінеральні ресурси України, 2020
In the current correlation chronostratigraphic scheme of early Precambrian of the Ukrainian Shield, among Neoarchean supra crystalline formations of the Buzko-Rosynskyi block, it is identified the Rosynsko-Tikytska series, which consist of the Myzynivska
V. P. Bezvynnyi, M. M. Kostenko
doaj   +1 more source

Seasonal shifts in network structure and species roles in a tropical island plant–flower visitor community Cambios estacionales en la estructura de la red de interacciones entre plantas y visitantes florales y en los roles de las especies en una comunidad insular tropical

Insect Conservation and Diversity, EarlyView.
Constant visitation rates across the flowering season masked major shifts in plant and flower visitor interaction structure, specialization, species roles and trait‐driven patterns shaping interaction intensity. Plants and flower visitors changed ecological roles over time, with native flower visitors playing key roles in maintaining network cohesion ...
Alba Costa, Julia Jaca, Christopher N. Kaiser‐Bunbury, Anna Traveset   +3 more
wiley   +1 more source

The Karst Mandhip Khol-python cave complex in the lenticular limestone intercalations of the matamorphic Chhatrela formation (Chhattisgarh, India)

Acta Carsologica, 2011
The Mandhhip Khhol-Pyton cave, located in an area declared Protected Forest in thhe Rajnandgaon District about 7 km in a direct line WwNWw from thhe village of Thakurtola (N21°39’:E080°58’), consists of an upper level orientated essentially along NE-SWw ...
Rosario Ruggieri, Jayant Biswas
doaj   +1 more source

Within‐lake length adjustment improves otolith shape discrimination among lake trout Salvelinus namaycush populations

Journal of Fish Biology, EarlyView.
Abstract Distinguishing fish populations is a long‐standing challenge in fisheries management, and otolith shape provides a low‐cost marker of population structure. Fish size strongly influences otolith shape; however, within‐lake size variation can obscure differences among populations. Here, a within‐lake length adjustment of otolith elliptic Fourier
Bradley E. Howell, Giulio Navarroli, Eric J. Mullen, Olivier Morissette, Caleb T. Hasler   +4 more
wiley   +1 more source

Features of development of new direction exploration work in the Eastern region Ukraine. Article 1. The objective difficulties mapping complex base

Мінеральні ресурси України, 2016
Base oil and gas complex, of which the new area exploration in the Eastern region of Ukraine consists of lower (subsurface section Precambrian basement) and upper (Precambrian weathering crust, roofing layers of sedimentary rock) sub.
V. P. Lebed
doaj  

Strontium isotopes are consistent with low‐elevation foraging limits for Henst's goshawk

Wildlife Society Bulletin, 2017
Apex predators play critical roles in the ecosystems they inhabit. Unfortunately, little is known about movement patterns for many species. This information is critical for evaluating vulnerability to habitat loss and the adequacy of existing or proposed
Brooke E. Crowley, Philip A. Slater, Summer J. Arrigo‐Nelson, Andrea L. Baden, Sarah M. Karpanty   +4 more
doaj   +1 more source

Feldspar Albitization With Implications for Reservoir Quality Evolution of Eocene Turbidite Sandstones in Offshore Espírito Santo Basin, Eastern Brazil

Journal of Petroleum Geology, EarlyView.
ABSTRACT The diagenetic albitization of plagioclase and K‐feldspar grains is a transformative process that significantly alters sandstone's detrital composition and formation water chemistry, impacting reservoir quality. In this study, Eocene turbidite sandstones from the offshore Espírito Santo Basin, Brazil, were investigated to elucidate the role of
Eveline E. Zambonato, Luiz F. De Ros, Howri Mansurbeg   +2 more
wiley   +1 more source

Genesis of crystalline crust and lithosphere of ancient platforms according to data on the hot heterogeneous accretion of the Earth

Литосфера, 2017
Compositions of gneisses from the Early Precambrian crystalline complexes of the Aldan shield and of mantle xenoliths from kimberlites plot along the magmatic fractionation trends.
Vladimir S. Shkodzinskii
doaj   +2 more sources

Seismic Reflection Profiling Reveals New Accretionary Structure in the Solonker Zone of the Central Asian Orogenic Belt

Geophysical Research Letters
The Central Asian Orogenic Belt (CAOB) was formed by the aggregation and collage of numerous Paleozoic subduction‐accretion assemblages and Precambrian microcontinental blocks.
Xiao‐Miao Tan, Jian‐Bo Zhou, Hui‐Lin Li, Hai‐Yan Wang, He‐Sheng Hou, Wen‐Hui Li, Ying Rao, Rui Gao   +7 more
doaj   +1 more source

GRANITES OF THE NORTHERN TIMAN – PROBABLE INDICATORS OF NEOPROTEROZOIC STAGES OF RODINIA BREAKUP

Геодинамика и тектонофизика, 2020
The Northern Timan is an uplifted block of Late Precambrian basement of the Timan Ridge, where Neoproterozoic sedimentary-metamorphic rocks of the Barmin Group are cut by intrusive rocks of different composition and all unconformably overlain by Lower ...
V. L. Andreichev, A. A. Soboleva, O. V. Udoratina, Yu. L. Ronkin, M. A. Coble, E. L. Miller   +5 more
doaj   +1 more source