http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Rubatto, Daniela (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Kim, Sung Won,Oh, Chang Whan,Williams, Ian S.,Rubatto, Daniela,Ryu, In-Chang,Rajesh, V.J.,Kim, Cheong-Bin,Guo, Jinghui,Zhai, Mingguo Elsevier 2006 Lithos Vol.92 No.3
<P><B>Abstract</B></P><P>Petrological analysis, zircon trace element analysis and SHRIMP zircon U–Pb dating of retrogressed eclogite and garnet granulite from Bibong, Hongseong area, SW Gyeonggi Massif, South Korea provide compelling evidence for Triassic (231.4±3.3 Ma) high-pressure (HP) eclogite facies (M1) metamorphisms at a peak pressure–temperature (<I>P</I>–<I>T</I>) of ca. 16.5–20.0kb and 775–850°C. This was followed by isothermal decompression (ITD), with a sharp decrease in pressure from 20 to 10kb and a slight temperature rise from eclogite facies (M1) to granulite facies (M2), followed by uplift and cooling. Granitic orthogneiss surrounding the Baekdong garnet granulite and the ophiolite-related ultramafic lenticular body near Bibong records evidence for a later Silurian (418±8Ma) intermediate high-pressure (IHP) granulite facies metamorphism and a prograde <I>P</I>–<I>T</I> path with peak <I>P</I>–<I>T</I> conditions of ca. 13.5kb and 800°C. K–Ar ages of biotite from garnet granulites, amphibolites, and granitic orthogneisses in and around the Bibong metabasite lenticular body are 208–219Ma, recording cooling to about 310°C after the Early Triassic metamorphic peak. Neoproterozoic zircon cores in the retrogressed eclogite and granitic orthogneiss provide evidence that the protoliths of these rocks were ∼800 and ∼900Ma old, respectively, similar to the ages of tectonic episodes in the Central Orogenic Belt of China. This, and the evidence for Triassic HP/UHP metamorphism in both China and Korea, is consistent with a regional tectonic link within Northeast Asia from the time of Rodinia amalgamation to Triassic continent–continent collision between the North and South China Blocks, and with an eastward extension of the Dabie–Sulu suture zone into the Hongseong area of South Korea.</P>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
