Aims For many terrestrial plants,nitrate is the most important form of available soil nitrogen for growth.However,many plant species,which grow on acidic,ammonium-dominated soils,exhibit a con-stantly low level of nit...
A broad set of samples from the CVP has been analyzing Pb isotopes. Campanian Volcanic Province (CVP) has been produced by various ranges of mixing between three components: 1) MORB, 2) Hercynian basement and 3) upper...
This work is based on apatite fission-track analysis of samples(mostly granites)from the basement of the Cretaceous-Tertiary Phosphate and Ganntour Plateaus, exposed in the Jebilet and Rehamna massifs (Western Meseta,...
supported by the National Natural Science Foundation of China (Nos. 40672143, 40472107, 40172076);the National Basic Research Program (Nos. 2005CB422107, G1999043305);Project of Northwest Oilfield Company, SINOPEC (KY-S-2006-014)
Basic and intermediate-acidic igneous rocks were developed during the late Hercynian in North Tarim basin. The geochemistry characteristics of the rocks show that basic volcanic rock has K2O/Na2O = 0.18-0.61 〈 1 and ...
the National Land and Resources Great Survey Projects (Grant Nos. 200013000127, 200113900018, 200313000041); the National National Natural Science Foundation of China (Grant Nos. 40572052 , 40373014); the 0pen Foundation of State Key Laboratory for Endogenous Mineral Deposits Research, Nanjing University; the New Era Higher-Level Qualified Scientists and Engineers Foundation, Hubei Province.
An identification has been made of some shoshonitic intrusive rocks in central Hainan Island recently. These rocks are K-rich (K2O=2.9%―5.1%, K2O/Na2O=0.95―2.12), distinctly enriched in LILE and LREE, strongly deple...
Introduction
The Rheinisches Schiefergebirge, the northern,non metamorphic part of the Hercynian orogen in Middle Europe is one of the most excellent examples of a stable continental area, deeply weathered under a tro...
TheresearchissponsoredbytheNationalNaturalScienceFoundationofChina (No .4 9972 0 78)
The Late Caledonian to Early Hercynian North Qilian orogenic belt in no rthwestern China is an elongate tectonic unit situated between the North China p late in the north and the Qaidam plate in the south. North Qili...
Based on the study of the location of extensional action in the tectonic background and the state of regional tectonic stress, the extensional action can be distinguished into active and passive types. The active exte...
Qilian orogenic belt is a typical orogenic belt formed by polycyclic collisions between the North China plate and Qaidam microplate. Qilian ocean originated from the rift of the late Proterozoic Rodinia continent(Pang...
Twenty-three ichnotaxa have been found in the Silurian and Carboniferous turbidites of the Tianshan orogenic belt and the Triassic turbidites of the East Kunlun-West Qinling orogenic belt of northwestern China. They a...