Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim
Paleomagnetic and rock magnetic studies on samples of 18 sites from the Cretaceous marine sedimentary rocks in the Tongyouluke section, Akto County, southwest Tarim, China show that the magnetic carriers of the Lower Cretaceous are dominated by hematite with some magnetite, while the magnetic carrie...
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| Veröffentlicht in: | Science China. Earth sciences 2005-03, Vol.48 (3), p.406-416 |
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| creator | Shen, Zhongyue Chen, Hanlin Fang, Dajun Ding, Jinghai Zhang, Shiben Huang, Zhibin Li, Meng |
| description | Paleomagnetic and rock magnetic studies on samples of 18 sites from the Cretaceous marine sedimentary rocks in the Tongyouluke section, Akto County, southwest Tarim, China show that the magnetic carriers of the Lower Cretaceous are dominated by hematite with some magnetite, while the magnetic carriers of the Upper Cretaceous are characterized by a combination of magnetite and titanomagnetite as well as hematite and goethite. Stepwise thermal demagnetization is performed and vector analysis is used to isolate magnetic components, which illustrates a single magnetic component or double magnetic components. The high temperature stable components are dual polarities and pass polarity test, reversal test and consistency test. The overall mean direction of the Lower Cretaceous is D = 27.0°, I = 42.0°, a95=6.5° with pole position at f = 190.3°, ?=63.1°, dp=4.9°, dm=8.0°. The overall mean direction of the Upper Cretaceous is D = 29.1°, I = 39.4°, a95=11.2° with pole position at f =190.9°, ?=60.3°, dp= 8.0°, dm=13.4°. Compared with the inclination of the Early Cretaceous from red beds of north Tarim, the contemporary inclination of southwest Tarim is 10.0° ± 7.8° sharper, but it is still 8.1°±8.9°, shallower than that of Early Cretaceous basalts in southwest Tarim. Although these pa-leomagnetic data show slightly larger confidence limit, the paleolatitude of the marine Cretaceous tends to lie between that of terrestrial red beds and volcanic rocks. |
| doi_str_mv | 10.1360/03yd0378 |
| format | Article |
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Stepwise thermal demagnetization is performed and vector analysis is used to isolate magnetic components, which illustrates a single magnetic component or double magnetic components. The high temperature stable components are dual polarities and pass polarity test, reversal test and consistency test. The overall mean direction of the Lower Cretaceous is D = 27.0°, I = 42.0°, a95=6.5° with pole position at f = 190.3°, ?=63.1°, dp=4.9°, dm=8.0°. The overall mean direction of the Upper Cretaceous is D = 29.1°, I = 39.4°, a95=11.2° with pole position at f =190.9°, ?=60.3°, dp= 8.0°, dm=13.4°. Compared with the inclination of the Early Cretaceous from red beds of north Tarim, the contemporary inclination of southwest Tarim is 10.0° ± 7.8° sharper, but it is still 8.1°±8.9°, shallower than that of Early Cretaceous basalts in southwest Tarim. Although these pa-leomagnetic data show slightly larger confidence limit, the paleolatitude of the marine Cretaceous tends to lie between that of terrestrial red beds and volcanic rocks.</description><identifier>ISSN: 1006-9313</identifier><identifier>ISSN: 1674-7313</identifier><identifier>EISSN: 1862-2801</identifier><identifier>EISSN: 1869-1897</identifier><identifier>DOI: 10.1360/03yd0378</identifier><language>eng</language><publisher>Dordrecht: Springer Nature B.V</publisher><subject>Basalt ; Carriers ; Components ; Confidence limits ; Consistency tests ; Cretaceous ; Direction ; Geology ; Goethite ; Haematite ; Hematite ; High temperature ; Inclination ; Magnetic studies ; Magnetite ; Marine sediments ; Palaeomagnetism ; Paleolatitude ; Paleomagnetism ; Rocks ; Sedimentary rocks ; Sediments ; Vector analysis ; Volcanic rocks</subject><ispartof>Science China. Earth sciences, 2005-03, Vol.48 (3), p.406-416</ispartof><rights>Science in China Press 2005.</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a3272-6e6163416f2ceac1adcab60af8ec44cbe0f4919538915a1163468ed006f02e2f3</citedby><cites>FETCH-LOGICAL-a3272-6e6163416f2ceac1adcab60af8ec44cbe0f4919538915a1163468ed006f02e2f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/zgkx-ed/zgkx-ed.jpg</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Shen, Zhongyue</creatorcontrib><creatorcontrib>Chen, Hanlin</creatorcontrib><creatorcontrib>Fang, Dajun</creatorcontrib><creatorcontrib>Ding, Jinghai</creatorcontrib><creatorcontrib>Zhang, Shiben</creatorcontrib><creatorcontrib>Huang, Zhibin</creatorcontrib><creatorcontrib>Li, Meng</creatorcontrib><title>Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim</title><title>Science China. Earth sciences</title><description>Paleomagnetic and rock magnetic studies on samples of 18 sites from the Cretaceous marine sedimentary rocks in the Tongyouluke section, Akto County, southwest Tarim, China show that the magnetic carriers of the Lower Cretaceous are dominated by hematite with some magnetite, while the magnetic carriers of the Upper Cretaceous are characterized by a combination of magnetite and titanomagnetite as well as hematite and goethite. Stepwise thermal demagnetization is performed and vector analysis is used to isolate magnetic components, which illustrates a single magnetic component or double magnetic components. The high temperature stable components are dual polarities and pass polarity test, reversal test and consistency test. The overall mean direction of the Lower Cretaceous is D = 27.0°, I = 42.0°, a95=6.5° with pole position at f = 190.3°, ?=63.1°, dp=4.9°, dm=8.0°. The overall mean direction of the Upper Cretaceous is D = 29.1°, I = 39.4°, a95=11.2° with pole position at f =190.9°, ?=60.3°, dp= 8.0°, dm=13.4°. Compared with the inclination of the Early Cretaceous from red beds of north Tarim, the contemporary inclination of southwest Tarim is 10.0° ± 7.8° sharper, but it is still 8.1°±8.9°, shallower than that of Early Cretaceous basalts in southwest Tarim. Although these pa-leomagnetic data show slightly larger confidence limit, the paleolatitude of the marine Cretaceous tends to lie between that of terrestrial red beds and volcanic rocks.</description><subject>Basalt</subject><subject>Carriers</subject><subject>Components</subject><subject>Confidence limits</subject><subject>Consistency tests</subject><subject>Cretaceous</subject><subject>Direction</subject><subject>Geology</subject><subject>Goethite</subject><subject>Haematite</subject><subject>Hematite</subject><subject>High temperature</subject><subject>Inclination</subject><subject>Magnetic studies</subject><subject>Magnetite</subject><subject>Marine sediments</subject><subject>Palaeomagnetism</subject><subject>Paleolatitude</subject><subject>Paleomagnetism</subject><subject>Rocks</subject><subject>Sedimentary rocks</subject><subject>Sediments</subject><subject>Vector analysis</subject><subject>Volcanic rocks</subject><issn>1006-9313</issn><issn>1674-7313</issn><issn>1862-2801</issn><issn>1869-1897</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp90c1LwzAUAPAiCs4p-CcED-rB6kvSZulRhl8w0MMEbyFLX7Zqm2jTMudfb8b8AA-e3jv8eJ9JckjhnHIBF8BXJfCR3EoGVAqWMgl0O-YAIi045bvJXgjPALzIs2KQPD3oGn2j5w67ypAWQ193gXhLugWScYudNuj7QBrdVg5JwLJq0EVSOTL1br7yfd2_4BkJvu8WSwwdmUba7Cc7VtcBD77iMHm8vpqOb9PJ_c3d-HKSas5GLBUoqOAZFZYZ1Ibq0uiZAG0lmiwzMwSbFbTIuSxorunaColl3MYCQ2b5MDnd1F1qZ7Wbq2ffty52VB_zl3eFJQPIgQNlkZ5s6Gvr3_o4qWqqYLCutVuvqGTOM0lBFlEe_ytpkTHIMxHh0R_4034kWJ4LAex3RNP6EFq06jUeSLcrRUGtn6a-n8Y_AWK8iM4</recordid><startdate>20050301</startdate><enddate>20050301</enddate><creator>Shen, Zhongyue</creator><creator>Chen, Hanlin</creator><creator>Fang, Dajun</creator><creator>Ding, Jinghai</creator><creator>Zhang, Shiben</creator><creator>Huang, Zhibin</creator><creator>Li, Meng</creator><general>Springer Nature B.V</general><general>Department of Earth Sciences, Zhejiang University, Hangzhou 310027 China%Tarim Oil Field Company, PetroChina Company Limited, Korla 830011, China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M2P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20050301</creationdate><title>Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim</title><author>Shen, Zhongyue ; Chen, Hanlin ; Fang, Dajun ; Ding, Jinghai ; Zhang, Shiben ; Huang, Zhibin ; Li, Meng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a3272-6e6163416f2ceac1adcab60af8ec44cbe0f4919538915a1163468ed006f02e2f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Basalt</topic><topic>Carriers</topic><topic>Components</topic><topic>Confidence limits</topic><topic>Consistency tests</topic><topic>Cretaceous</topic><topic>Direction</topic><topic>Geology</topic><topic>Goethite</topic><topic>Haematite</topic><topic>Hematite</topic><topic>High temperature</topic><topic>Inclination</topic><topic>Magnetic studies</topic><topic>Magnetite</topic><topic>Marine sediments</topic><topic>Palaeomagnetism</topic><topic>Paleolatitude</topic><topic>Paleomagnetism</topic><topic>Rocks</topic><topic>Sedimentary rocks</topic><topic>Sediments</topic><topic>Vector analysis</topic><topic>Volcanic rocks</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shen, Zhongyue</creatorcontrib><creatorcontrib>Chen, Hanlin</creatorcontrib><creatorcontrib>Fang, Dajun</creatorcontrib><creatorcontrib>Ding, Jinghai</creatorcontrib><creatorcontrib>Zhang, Shiben</creatorcontrib><creatorcontrib>Huang, Zhibin</creatorcontrib><creatorcontrib>Li, Meng</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Science China. Earth sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shen, Zhongyue</au><au>Chen, Hanlin</au><au>Fang, Dajun</au><au>Ding, Jinghai</au><au>Zhang, Shiben</au><au>Huang, Zhibin</au><au>Li, Meng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim</atitle><jtitle>Science China. Earth sciences</jtitle><date>2005-03-01</date><risdate>2005</risdate><volume>48</volume><issue>3</issue><spage>406</spage><epage>416</epage><pages>406-416</pages><issn>1006-9313</issn><issn>1674-7313</issn><eissn>1862-2801</eissn><eissn>1869-1897</eissn><abstract>Paleomagnetic and rock magnetic studies on samples of 18 sites from the Cretaceous marine sedimentary rocks in the Tongyouluke section, Akto County, southwest Tarim, China show that the magnetic carriers of the Lower Cretaceous are dominated by hematite with some magnetite, while the magnetic carriers of the Upper Cretaceous are characterized by a combination of magnetite and titanomagnetite as well as hematite and goethite. Stepwise thermal demagnetization is performed and vector analysis is used to isolate magnetic components, which illustrates a single magnetic component or double magnetic components. The high temperature stable components are dual polarities and pass polarity test, reversal test and consistency test. The overall mean direction of the Lower Cretaceous is D = 27.0°, I = 42.0°, a95=6.5° with pole position at f = 190.3°, ?=63.1°, dp=4.9°, dm=8.0°. The overall mean direction of the Upper Cretaceous is D = 29.1°, I = 39.4°, a95=11.2° with pole position at f =190.9°, ?=60.3°, dp= 8.0°, dm=13.4°. Compared with the inclination of the Early Cretaceous from red beds of north Tarim, the contemporary inclination of southwest Tarim is 10.0° ± 7.8° sharper, but it is still 8.1°±8.9°, shallower than that of Early Cretaceous basalts in southwest Tarim. Although these pa-leomagnetic data show slightly larger confidence limit, the paleolatitude of the marine Cretaceous tends to lie between that of terrestrial red beds and volcanic rocks.</abstract><cop>Dordrecht</cop><pub>Springer Nature B.V</pub><doi>10.1360/03yd0378</doi><tpages>11</tpages></addata></record> |
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| subjects | Basalt Carriers Components Confidence limits Consistency tests Cretaceous Direction Geology Goethite Haematite Hematite High temperature Inclination Magnetic studies Magnetite Marine sediments Palaeomagnetism Paleolatitude Paleomagnetism Rocks Sedimentary rocks Sediments Vector analysis Volcanic rocks |
| title | Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim |
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