Results 61 to 70 of about 318,975 (205)

Thermal contraints on high-pressure granulite metamorphism of supracrustal rocks [PDF]

, 1983
The circumstances leading to the formation and exposure at the Earth's surface of supracrustal granulites are examined. These are defined as sediments, volcanics, and other rock units which originally formed at the surface of the Earth, were ...
Ashwal, L. D., Morgan, P., Leslie, W. W.
core  

Role of Post‐Collisional Magmatism in Continental Growth and Reworking Since the Late Archean

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The mechanisms responsible for the formation and compositional evolution of continental crust remain central questions in Earth science. Post‐collisional magmatism is widely preserved in the continental record; however, its contribution to crustal growth may be underestimated because enriched isotopic signatures obscure juvenile mantle input ...
Dongjian Ouyang, Ross N. Mitchell, Peng Peng, Jinghui Guo, Qiuli Li   +4 more
wiley   +1 more source

Age and correlation of supracrustal rocks in the Frederikshåbs Isblink area

Rapport Grønlands Geologiske Undersøgelse, 1969
Eight weeks field work was spent in the Frederikshåbs Isblink area as a continuation to the investigations carried out in 1967. Half the time was used to further the work on Dalagers Nunatakker and half was spent on the gneisses and supracrustal rocks north of the Isblink in an attempt at correlation across the Isblink between the gneiss-amphibolite ...
openaire   +2 more sources

High Temporal Resolution Record of Flare‐Up Magmatism Reveals Tectonic and Local Controls on Crustal Thickening in the Cretaceous Continental Arc of the North Cascades

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Magmatic output in continental arcs is often variable, with short‐lived flare‐ups separated by prolonged lulls. Flare‐ups commonly coincide with increased crustal thickness, which has been interpreted as both a cause and a consequence of elevated magmatism.
Sourav Karmakar, Sarnav Bakshi, Michael P. Eddy, Robert Miller, Stacia M. Gordon   +4 more
wiley   +1 more source

Archaean gneisses and supracrustal rocks of the Tingmiarmiut region, South-East Greenland

Rapport Grønlands Geologiske Undersøgelse, 1983
In August 1981 a mapping programme was initiated which aimed at the production of the 1:500000 geological map sheet of the Tingmiarmiut-Angmagssalik region (sheet No. 14) (Escher & Nielsen, 1982). In 1982 this programme was eontinued in the Tingmiarmiut Fjord region (fig. 27). Due to exceptionally bad ice conditions and other misfortunes enly a few
J.C Escher, T.F.D Nielsen
openaire   +2 more sources

Flexural bulges and foredeep basins: Dynamic tectonic control on shifting depocentres and condensed facies, Upper Cretaceous (Santonian), Western Canada Foreland Basin

The Depositional Record, Volume 12, Issue 4, September 2026.
Allostratigraphically defined mudstone packages show marked along‐strike thickness variation, interpreted to be related to shifting thrust activity in the orogen; loading cycles lasted about 750 kyr. Close to the orogen, the forebulge is mantled by shelly sandstone whereas far from the orogen, the forebulge is typified by organic‐rich mudstone ...
Omar N. Al‐Mufti, A. Guy Plint, El‐Mahadia I. Mohammed, Ireneusz Walaszczyk, Y. Greg Hu   +4 more
wiley   +1 more source

Earliest paleoproterozoic supracrustal rocks in the north china craton recognized from the daqingshan area of the khondalite belt: Constraints on craton evolution

, 2014
The Upper Wulashan “Subgroup” at Daqingshan in the Khondalite Belt of the Western Block of the North China Craton contains an Early Paleoproterozoic (2.5–2.45 Ga) supracrustal sequence, incorporating banded iron formations, which we refer to as the ...
C. Dong (2923026), D. Liu (2844929), Y. Wan (1318521), H. Xie (6511211), M. Ma (822457), Z. Xu (1300320), Simon Wilde (7005155)   +6 more
core   +2 more sources

Sediment Characteristics and Architecture of Triangular‐Shaped Murtoos: A Test of Murtoo Formation Hypotheses

Earth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Murtoos and murtooized terrains are new types of subglacial landforms found in the Fennoscandian Ice Sheet (FIS) and Cordilleran Ice Sheet (CIS) regions. LiDAR‐based morphometric analyses have revealed substantial morphometric diversity among murtoos and murtoo‐related landforms, while sedimentological excavations have documented a wide range of ...
A. E. K. Ojala, S. Soini, J. Mäkinen, J. Hovikoski, P. Sarala, A. Hepburn, K. Kajuutti, E. Ahokangas, J. Kautto   +8 more
wiley   +1 more source

Integrated Multi‐Physics Characterisation of the Northern Kiruna Mining District With Machine‐Learning‐Assisted Interpretation

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT Integrated earth modelling aims to combine all available geoscientific information to derive one common earth model. However, combining multiple parameters in a meaningful way remains challenging. In this study, we aim to improve mineral exploration workflows through the integration of new magnetotelluric data with other geophysical and ...
Oskar Rydman, Ervin Veress, Maxim Yu. Smirnov, Tobias E. Bauer, Thorkild M. Rasmussen, Niklas Juhojuntti   +5 more
wiley   +1 more source

Tourmalinites in supracrustal rocks in the Bjørnesund area, West Greenland

Rapport Grønlands Geologiske Undersøgelse, 1992
In the mid-Archaean supracrustal rocks of Bjørnesund south of Fiskenæsset metre wide anthophyllite-rich zones are found hosted in mafic volcanics. These zones, which are locally associated with sulphides, are interpreted as alteration zones from hydrothermal solutions which circulated through the volcano-sedimentary pile; in places they contain thin ...
openaire   +1 more source