Results 81 to 90 of about 255,550 (197)

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Recycling of leather waste containing chromium - A review [PDF]

, 2011
Chromium tanned leather is the preferred option for tanning leather used in footwear due to the high performance and unique properties it confers to the final product.
Manuel Fonseca Almeida, M. J. Ferreira
core   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Synthesis and characterisation of chromium (III) complexes with polypyridyl ligands [PDF]

, 2014
Slowing down climate change is probably the biggest current global challenge for mankind. The two main strategies to achieve this are the development of new sustainable energy sources and new or improved technologies that are less energy consuming ...
Schönle, Jonas Michael
core   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

The chromium isotopic composition of seawater and marine carbonates [PDF]

, 2013
Chromium isotopes are fractionated during redox reactions and have the potential to provide a record of changes in the oxygenation levels of the oceans in the geological past.
Connolly, Doug P, Bonnand, P., Bonnand, Pierre, James, Rachael H., Fairchild, Ian, Parkinson, Ian J, Parkinson, I.J., Fairchild, I.J., Fairchild, IJ, Connelly, D.P., James, R.H.   +10 more
core   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source

Geochemical characteristics and implications of pyrite sulfur isotope in Fengcheng Formation of Mahu Sag, Junggar Basin

Shiyou shiyan dizhi
The Fengcheng Formation in the Mahu Sag of the Junggar Basin spans the Carboniferous and Permian boundary and represents a typical shale oil reservoir deposited in a marine to continental transitional environment.
Chengzhou JIANG, Guiwen WANG, Song WANG, Yilin ZHANG, Yuyue HUANG   +4 more
doaj   +1 more source

Realization of aligned three-dimensional single-crystal chromium nanostructures by thermal evaporation [PDF]

, 2010
Aligned three-dimensional single-crystal chromium nanostructures are fabricated onto a silicon substrate by thermal evaporation in a conventional thermal evaporator, where the incident angle of Cr vapor flux with respect to the substrate surface normal ...
Pierre Alphonse, Tenailleau, Christophe, Jean-Yves Chane-Ching, Christophe Tenailleau, Chane-Ching, Jean-Yves, Zhang, Kaili, Alphonse, Pierre, Kaili Zhang   +7 more
core   +1 more source

Disturbance from restoration reseeding is associated with short‐term topsoil carbon loss and alters soil bacterial communities and functions in degraded alpine meadows of the Qinghai–Xizang Plateau

Grassland Research, EarlyView.
Restoration reseeding of degraded alpine meadows increased aboveground vegetation but was associated with short‐term topsoil carbon loss, coinciding with a microbial strategy shift from resident carbon‐preserving to carbon‐spending bacterial guilds. Abstract Background Restoration of degraded ecosystems is widely promoted as a nature‐based solution ...
Long‐Tao Zhu, Wen‐Min Shi, Guang‐Peng Qu, Xu Yin, Yong‐Kang Zhang, Ying‐Jie Sun, Zhen Luo, Wei Li, Chun‐Ping Zhang, Jie‐Jun Xi   +9 more
wiley   +1 more source