Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica
P(論文) The outline of geology and geologic structure of the northern Ongul Islands and surroundings of Lutzow-Holm Bay, East Antarctica is herein described. In this region is distributed the Ongul Group of the Lutzow-Holm Bay System. The Ongul Group is characterized by alternating layers of gneissic...
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ftnipr:oai:nipr.repo.nii.ac.jp:00001242 2024-09-09T19:09:20+00:00 Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica Matsumoto, Yukio Nishida, Tamio Yanai, Keizo Kojima, Hideyasu 1982-03 application/pdf https://nipr.repo.nii.ac.jp/record/1242/files/KJ00000011768.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 21 47 70 AA00733561 https://nipr.repo.nii.ac.jp/record/1242/files/KJ00000011768.pdf 1982 ftnipr 2024-06-17T04:00:31Z P(論文) The outline of geology and geologic structure of the northern Ongul Islands and surroundings of Lutzow-Holm Bay, East Antarctica is herein described. In this region is distributed the Ongul Group of the Lutzow-Holm Bay System. The Ongul Group is characterized by alternating layers of gneissic rocks of late Precambrian age. The crystalline rocks exposed in this region are classified as follows : (1) metabasite, (2) charnockitic rock, (3) hornblende gneiss, (4) garnet-biotite gneiss, (5) potassium feldspar porphyroblastic gneiss, (6) garnet gneiss, (7) garnet-bearing granitic gneiss and (8) pegmatite. Tectonically two principal deformational stages are discriminated in this region; the first deformational stage : inclined isoclinal folds with the axial trace trending north-south, the second deformational stage : close to open folds with the axial trace of an east-west trend. The third deformational stage which is distinguished in the Langhovde and Skarvsnes regions adjacent to this region is not so clearly recognized, but the conjugate sets of fractures which occurred during a later deformational stage are well developed throughout this region. departmental bulletin paper Other/Unknown Material Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan East Antarctica Langhovde ENVELOPE(39.733,39.733,-69.217,-69.217) Ongul ENVELOPE(39.533,39.533,-69.017,-69.017) Skarvsnes ENVELOPE(39.667,39.667,-69.467,-69.467) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
P(論文) The outline of geology and geologic structure of the northern Ongul Islands and surroundings of Lutzow-Holm Bay, East Antarctica is herein described. In this region is distributed the Ongul Group of the Lutzow-Holm Bay System. The Ongul Group is characterized by alternating layers of gneissic rocks of late Precambrian age. The crystalline rocks exposed in this region are classified as follows : (1) metabasite, (2) charnockitic rock, (3) hornblende gneiss, (4) garnet-biotite gneiss, (5) potassium feldspar porphyroblastic gneiss, (6) garnet gneiss, (7) garnet-bearing granitic gneiss and (8) pegmatite. Tectonically two principal deformational stages are discriminated in this region; the first deformational stage : inclined isoclinal folds with the axial trace trending north-south, the second deformational stage : close to open folds with the axial trace of an east-west trend. The third deformational stage which is distinguished in the Langhovde and Skarvsnes regions adjacent to this region is not so clearly recognized, but the conjugate sets of fractures which occurred during a later deformational stage are well developed throughout this region. departmental bulletin paper |
author |
Matsumoto, Yukio Nishida, Tamio Yanai, Keizo Kojima, Hideyasu |
spellingShingle |
Matsumoto, Yukio Nishida, Tamio Yanai, Keizo Kojima, Hideyasu Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
author_facet |
Matsumoto, Yukio Nishida, Tamio Yanai, Keizo Kojima, Hideyasu |
author_sort |
Matsumoto, Yukio |
title |
Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
title_short |
Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
title_full |
Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
title_fullStr |
Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
title_full_unstemmed |
Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica |
title_sort |
geology and geologic structure of the northern ongul islands and surroundings, east antarctica |
publishDate |
1982 |
url |
https://nipr.repo.nii.ac.jp/record/1242/files/KJ00000011768.pdf |
long_lat |
ENVELOPE(39.733,39.733,-69.217,-69.217) ENVELOPE(39.533,39.533,-69.017,-69.017) ENVELOPE(39.667,39.667,-69.467,-69.467) |
geographic |
East Antarctica Langhovde Ongul Skarvsnes |
geographic_facet |
East Antarctica Langhovde Ongul Skarvsnes |
genre |
Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research |
op_relation |
Memoirs of National Institute of Polar Research. Special issue 21 47 70 AA00733561 https://nipr.repo.nii.ac.jp/record/1242/files/KJ00000011768.pdf |
_version_ |
1809823597712113664 |