Block Faulting on the Gorda Rise
A study made of Gorda Rise near 41° 15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar sediments. Topography indicates that the steps were formed by block faulting. Distribution of the steps and the character of their tops suggest...
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| Published in: | Science (American Association for the Advancement of Science) Vol. 159; no. 3816; pp. 729 - 731 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
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United States
American Association for the Advancement of Science
16-02-1968
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| Abstract | A study made of Gorda Rise near 41° 15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar sediments. Topography indicates that the steps were formed by block faulting. Distribution of the steps and the character of their tops suggest that they originated in the central 2 or 3 kilometers of the valley floor and were subsequently moved outward, uplifted, and tilted along with their underlying blocks as the sea floor spread. Gorda Rise is considered a slowly spreading part of the oceanic-rise system. Studies of the Mid-Atlantic Ridge report features that may be similar uplifted blocks. |
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| AbstractList | A study made of Gorda Rise near 41°15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar sediments. Topography indicates that the steps were formed by block faulting. Distribution of the steps and the character of their tops suggest that they originated in the central 2 or 3 kilometers of the valley floor and were subsequently moved outward, uplifted, and tilted along with their underlying blocks as the sea floor spread. Gorda Rise is considered a slowly spreading part of the oceanic-rise system. Studies of the Mid-Atlantic Ridge report features that may be similar uplifted blocks. A study made of Gorda Rise near 41° 15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar sediments. Topography indicates that the steps were formed by block faulting. Distribution of the steps and the character of their tops suggest that they originated in the central 2 or 3 kilometers of the valley floor and were subsequently moved outward, uplifted, and tilted along with their underlying blocks as the sea floor spread. Gorda Rise is considered a slowly spreading part of the oceanic-rise system. Studies of the Mid-Atlantic Ridge report features that may be similar uplifted blocks. A study made of Gorda Rise near 41 degrees 15'N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar sediments. Topography indicates that the steps were formed by block faulting. Distribution of the steps and the character of their tops suggest that they originated in the central 2 or 3 kilometers of the valley floor and were subsequently moved outward, uplifted, and tilted along with their underlying blocks as the sea floor spread. Gorda Rise is considered a slowly spreading part of the oceanic-rise system. Studies of the Mid-Atlantic Ridge report features that may be similar uplifted blocks. |
| Author | Atwater, Tanya M. Mudie, John D. |
| Author_xml | – sequence: 1 givenname: Tanya M. surname: Atwater fullname: Atwater, Tanya M. – sequence: 2 givenname: John D. surname: Mudie fullname: Mudie, John D. |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/17795067$$D View this record in MEDLINE/PubMed |
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| Cites_doi | 10.1126/science.132.3441.1737 10.1139/e66-026 10.1029/JB073i012p03821 10.1126/science.154.3755.1405 10.1130/0016-7606(1967)78[527:POCAGR]2.0.CO;2 10.1126/science.150.3695.482 10.1016/0012-821X(67)90191-4 10.1126/science.157.3791.923 10.1016/0025-3227(64)90061-1 10.1029/JB073i006p02175 |
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| Copyright | Copyright 1968 American Association for the Advancement of Science |
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| References | (e_1_2_1_4_1) 1967; 2 (e_1_2_1_2_1) 1939 (e_1_2_1_8_1) 1968; 73 (e_1_2_1_1_1) 1966; 3 (e_1_2_1_3_1) 1967; 78 (e_1_2_1_10_1) 1968; 73 e_1_2_1_7_1 e_1_2_1_5_1 e_1_2_1_6_1 e_1_2_1_12_1 (e_1_2_1_9_1) 1967; 48 e_1_2_1_11_1 e_1_2_1_14_1 (e_1_2_1_13_1) 1964; 1 |
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| Snippet | A study made of Gorda Rise near 41° 15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar... A study made of Gorda Rise near 41 degrees 15'N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched,... A study made of Gorda Rise near 41°15′N with a novel instrument shows that the rift-valley walls have a tilted steplike profile, often with perched, planar... |
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| SubjectTerms | Basement rocks Ocean floor Scarps Sediments Topography Valleys |
| Title | Block Faulting on the Gorda Rise |
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