Results 141 to 150 of about 882,079 (194)

Foliation and cleavage

2010
H. Fossen
openaire   +3 more sources

Structural geology of the Cadillac Group along the Malartic segment of the Larder Lake Cadillac Deformation zone, Quebec, and implications for gold mineralization

Canadian journal of earth sciences (Print), 2022
The gold-endowed Larder Lake–Cadillac deformation zone (LLCDZ) in the Abitibi greenstone belt of the Archean Superior Province generally trends east but swings to the southeast along the Malartic segment in Quebec.
Brendon Samson, B. Lafrance, Xiao-Chun Zhou, M. Hamilton, B. Quesnel, C. Scheffer, G. Beaudoin, S. Perrouty   +7 more
semanticscholar   +1 more source

The Decorah structure, northeastern Iowa: Geology and evidence for formation by meteorite impact

GSA Bulletin, 2018
The Decorah structure, recently discovered in northeastern Iowa, now appears as an almost entirely subsurface, deeply eroded circular basin 5.6 km in diameter and ~200 m deep, that truncates a near-horizontal series of Upper Cambrian to Lower Ordovician ...
B. French, R. McKay, Huaibao P. Liu, D. Briggs, B. Witzke   +4 more
semanticscholar   +1 more source

Geology and petrography of Sabon Garin Kara and environs part of Malumfashi sheet 79 NE Nigeria

Journal of Geology and Mining Research, 2019
The study area is about 40 km2 that is (8 km × 5 km) which is located in Gwarzo Local Government area of Kano State part of  Malumfashi sheet 79NE which lies within Longitude E07°57’19.5” and E08°00’00” and Latitude N11° 51’30”andN11°47‘00.
Ahmed Abubakar Sarki, M. Kwaya, Nasir Abdullahi Maiauduga, T. A. Adedokun, Y. Muhammad, Abubakar Nasir Karofi, A. Maigari   +6 more
semanticscholar   +1 more source

The geology of a portion of the Santa Monica Mountains with a section on rock cleavage

A section of the Santa Monica Mountains lying in the eastern third of the Reseda Quadrangle and a portion of the western third of the Van Nuys Quadrangle comprises the geological mapping investigated by this report. The occurrence of a very thick section
B. Holzman
semanticscholar   +1 more source

Formation of slaty cleavage along a temperature gradient

, 2018
(1) Institute of Geological Sciences, University of Bern, Bern, Switzerland (ismay.akker@geo.unibe.ch), (2) Structural Geology, Tectonics and Geomechanics, Energy and Mineral Resources Group, RWTH Aachen University, Aachen, Germany, (3) Structural ...
Ismay Vénice Akker, J. Urai, A. Berger, J. Klaver, M. Herwegh, G. Desbois   +5 more
semanticscholar   +1 more source

The contact aureole of the South Mountain Batholith in Halifax, Nova Scotia; geology, mineral assemblages, and isograds

, 2012
The contact aureole at the eastern margin of the South Mountain Batholith (Halifax Pluton) underlies most of the city of Halifax, Nova Scotia. The Halifax Group in the study area includes two lithological units, the Cunard and Bluestone formations ...
R. Jamieson, G. Hart, G. Chapman, N. Tobey   +3 more
semanticscholar   +1 more source

An investigation into the environment of formation of the volcanic-hosted Mt. Lyell copper deposits using geology, mineralogy, stable isotopes, and a six-component chlorite solid solution model

, 1981
The Mt. Lyell copper deposits occur within 10 km 3 of hydrothermally altered, calc-alkaline felsic pyroclastics and lavas that form the overturned, steeply west-dipping limb of a north-south-trending anticline within the Mt.
J. Walshe, M. Solomon
semanticscholar   +1 more source

Sedimentology, structural geology, and tectonics of the Shikoku subduction zone, southwestern Japan

, 1976
The Shikoku subduction zone is developed along the Nankai Trough where the Philippine plate is underthrust beneath the Asian plate. The landward wall of the Nankai Trough consists of horizontal parallel ridges and basins that trend northeastward.
J. Moore, D. Karig
semanticscholar   +1 more source

The Rock Elm meteorite impact structure, Wisconsin: Geology and shock-metamorphic effects in quartz

, 2004
The Rock Elm structure in southwest Wisconsin is an anomalous circular area of highly deformed rocks, ∼6.5 km in diameter, located in a region of virtually horizontal undeformed sedimentary rocks.
B. French, W. S. Cordua, J. Plescia
semanticscholar   +1 more source