[PDF] Top 20 Directory UMM :Data Elmu:jurnal:P:Precambrian Research:Vol105.Issue1.2001:

... gional pattern of lineations shown in their Fig. 1. A similar pattern is found around the entire Mount Edgar Batholith (Collins, 1989). Only the hornblende lineations from the ‘Duffada shear zone’ are uni-directional and ... Lihat dokumen lengkap

... These data fall in the same age range as U – Pb columbite – tantalite 1807 – 1803 Ma ages for late-kinematic pegmatites in southern Finland, which intruded during trans- pressive, semi-ductile conditions (Lindroos ... Lihat dokumen lengkap

... isotope data for rocks and the breccia matrix suggest the rocks were at least steeply overturned on this flank of the Mt Edgar Dome prior to ...© 2001 Elsevier Science ... Lihat dokumen lengkap

... age data exist for the volcano-sed- imentary succession in the Chameis sub-terrane but, based on chemostratigraphic and biostrati- graphic (Conophyton -like stromatolites) correla- tion with the para-autochthonous ... Lihat dokumen lengkap

... The emplacement of these intrusions shortly after, or during, the metamorphic peak suggested that the heat required for their formation was closely associated with metamorphism character- ised by high-T, low-P, ... Lihat dokumen lengkap

... In the volume 96(1 – 2) of ‘Precambrian Re- search’, Beaumont and Robert (1999) presented the first complete study on the nitrogen isotopic composition of kerogens preserved in Archean and Proterozoic rocks. This ... Lihat dokumen lengkap

... Collins (1989) recorded isoclinal recumbent folds within the McPhee shear. Van Kranendonk et al. say that only a moderate displacement across the McPhee shear is supported by data from Collins (1989, Fig. 2) which ... Lihat dokumen lengkap

... geochemical data — especially Sm Nd data combined with independent reliable U Pb mineral ...refraction data (Pilipenko et ...chemical data bearing on the location of the Lapland – Kola Suture ... Lihat dokumen lengkap

... The Kolvitsa Belt in the south-western Kola Peninsula formed coeval with the earliest Palaeoproterozoic rift-belts in the Fennoscandian Shield. The Palaeoproterozoic history of this belt comprises the deposition of the ... Lihat dokumen lengkap

... Precambrian Research 105 2001 247 – 267 Age, evolution and regional setting of the Palaeoproterozoic Umba igneous suite in the Kolvitsa – Umba zone, Kola Peninsula: constraints from new[r] ... Lihat dokumen lengkap

... While low-temperature, diagenetically grown ti- tanites have been known for many decades, recent mineralogical and isotopic studies (e.g. Gromet, 1991; Resor et al., 1996) have particularly empha- sized the growth of ... Lihat dokumen lengkap

... element data, and particularly Pb isotopic ratios, of any significant assimilation of country rocks occurring during clinopyroxene – plagioclase fractionation, although this does not preclude contamina- tion of ... Lihat dokumen lengkap

... along Kaipokok Bay, marks another major change in depositional character, with U – Pb data constraining deposition to after 2013 Ma, the age of the youngest detrital zircon. This is a remark- able result because ... Lihat dokumen lengkap

... What data have been presented are often derived from destructive analyses of fluid inclusions (for exam- ple, see Table 5 in Roedder, 1972), but are ...quantitative data set for fluids accompanying the ... Lihat dokumen lengkap

... The Outer Hebridean Lewisian has not at- tracted the same intensive geochemical and geochronological investigations that have been carried out on the mainland over the past three decades, although there is a wealth of ... Lihat dokumen lengkap

... Pb-isotope data from the Al Bayda arc terrane is that these display highly unradiogenic compositions, plotting below the Stacey and Kramers (1975) terrestrial Pb isotope growth curve and to the left of the fields ... Lihat dokumen lengkap

... land and the northern part of the Baltic Shield (e.g. Bridgwater et al., 1990), but details of the correlation between these areas are still uncertain. The central part of the Nagssugtoqidian orogen (Fig. 1) is dominated ... Lihat dokumen lengkap

... David and I were involved in early collabora- tion of GGU with the Geological Survey of Canada (GSC), and in 1969 within Fred Tay- lor’s Torngat Mountain project we were put down with a zodiac and tent by a Cesna ... Lihat dokumen lengkap

... There are two extreme viewpoints regarding the development of the continental crust throughout the history of the Earth. The first is that its volume grew by incremental extraction from the mantle, with return flux ... Lihat dokumen lengkap

... U – Pb study of a sample of metasedimentary rock from the Ukaleq gneiss complex found 2750 – 2900 Ma zircons of probable detrital origin and that two or more generations of 2700 – 2500 Ma metamorphic zircons are present. ... Lihat dokumen lengkap