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Changes in orogenic style and surface environment recorded in Paleoproterozoic foreland successions
The Earth’s interior and surficial systems underwent dramatic changes during the Paleoproterozoic, but the interaction between them remains poorly...
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Metallic lead (Pb) nanospheres discovered in Hadean and Eoarchean zircon crystals at Jack Hills
Here, we report small randomly-distributed crystalline lead (Pb) nanospheres occurring in detrital zircon grains obtained from a weakly metamorphosed...
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Rutile Mineral Chemistry as a Guide to Provenance of Red Sediments and Modern Sands of Bhimunipatnam–Konada Coast, Andhra Pradesh, East Coast of India
Rutile is the most stable and widely distributed TiO 2 polymorph in rocks of low- to high-grade metamorphic facies and is also an accessory mineral in...
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GIS and AHP Techniques Based Delineation of Groundwater Potential Zones: a case study from Southern Western Ghats, India
Over-exploitation of groundwater and marked changes in climate over the years have imposed immense pressure on the global groundwater resources. As...
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Pb nanospheres in ancient zircon yield model ages for zircon formation and Pb mobilization
Nanospheres of lead (Pb) have recently been identified in zircon (ZrSiO 4 ) with the potential to compromise the veracity of U-Pb age determinations....
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Cold deep subduction recorded by remnants of a Paleoproterozoic carbonated slab
The absence of low-thermal gradients in old metamorphic rocks (<350 °C GPa −1 ) has been used to argue for a fundamental change in the style of plate...
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Petrological evidence for isobaric cooling of ultrahigh-temperature pelitic granulites from the Khondalite Belt, North China Craton
The ultrahigh-temperature (UHT) pelitic granulites from the Khondalite Belt, North China Craton (NCC), contain ilmenite in the matrix, which has been...
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Precipitation of rutile needles in garnet from sillimanite-bearing pelitic granulite from the Khondalite Belt, North China Craton
Pelitic granulite from the Khondalite Belt, North China Craton, is composed of garnet, sillimanite, perthite, biotite and quartz. Oriented rutile...
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LA-ICP-MS U–Pb geochronology of detrital zircons from the Zhaochigou Formation-complex in the Helan Mountain and its tectonic significance
This paper carries out studies about LA-ICP-MS U–Pb dating and Hf isotopic compositional analysis for detrital zircons in two metasedimentary samples...
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Paleoproterozoic high-pressure metamorphism in the northern North China Craton and implications for the Nuna supercontinent
The connection between the North China Craton (NCC) and contiguous cratons is important for the configuration of the Nuna supercontinent. Here we...
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SHRIMP U-Pb zircon dating of the Ordos Basin basement and its tectonic significance
SHRIMP U-Pb zircon 207 Pb/ 206 Pb ages were obtained from two drill cores from the basement of the Ordos Basin. A garnet-sillimanite-biotite-plagioclase...
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Early Precambrian tectonothermal events of the North China Craton: Constraints from in situ detrital zircon U-Pb, Hf and O isotopic compositions in Tietonggou Formation
Clastic sediments and sedimentary rocks are widely used for understanding the formation and evolution of the continental crust. The Tietonggou...
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Ca. 2.5 Ga TTG rocks in the western Alxa Block and their implications
The Alxa Block is considered part of the North China Craton, but the unambiguous Archean basement has not been reported. In this study, we present...
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Ductile deformation within Upper Himalaya Crystalline Sequence and geological implications, in Nyalam area, Southern Tibet
The South Tibet Detachment System (STDS) is a flat normal fault that separates the Upper Himalaya Crystalline Sequence (UHCS) below from the Tethyan...
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Re-Os isotopic constraint to the age of in komatiites in the Neoarchean Guyang greenstone belt, North China Craton
The 2.5 Ga Guyang greenstone belt is a major lithological unit in the northwestern part of the North China Craton. Komatiites have recently been...
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LA-(MC)-ICPMS U-Pb zircon geochronology and Lu-Hf isotope compositions of the Taihua complex on the southern margin of the North China Craton
Widely distributed on the southern margin of the North China Craton, the Taihua complex extends roughly in an east-west direction and the relatively...
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The age of the base of the paleoproterozoic Hutuo Group in the Wutai Mountains area, North China Craton: SHRIMP zircon U-Pb dating of basaltic andesite
Basalt and basaltic andesite metamorphosed at greenschist facies occurs with conglomerate layers at the bottom of the Paleoproterozoic Hutuo Group in...
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Petrochemical characteristics of leucogranite and a case study of Bengbu leucogranites
Leucogranites have a relatively narrow variation in SiO 2 content (70.5%–75.5%). Giving similar SiO 2 content, leucogranites have relatively higher Al 2 O
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Crustal growth at ∼2.5 Ga in the North China Craton: evidence from whole-rock Nd and zircon Hf isotopes in the Huai’an gneiss terrane
The Huai’an gneiss terrane mainly consists of TTG gneisses and dioritic gneisses. Laser in situ U-Pb dating of magmatic zircon cores indicates that...
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Palaeoproterozoic Khondalite Belt in the western North China Craton: New evidence from SHRIMP dating and Hf isotope composition of zircons from metamorphic rocks in the Bayan Ul-Helan Mountains area
Zircom U-Pb age and Hf isotope analyses were made on gneissic granite and garnet-mica two-feldspar gneiss from the Helanshan Group in the Bayan...