Metamorphism and Deformation
Links between metamorphism and deformation in feldspar at mid-crustal conditions
... GSS deformation, from the observed twin planes that appear to have been inherited during initial greenschist-facies metamorphism of Ca-bearing plagioclase ...
213
Coal Deformation, Metamorphism and Tectonic Environment in Xinhua, Hunan
... coal deformation and metamorphism, process control, sig- nificantly in coal composition, texture and structure elements of change and migration and accumulation and dispersion [1] [2] [3] [4] ...of ...
13
Deformation and metamorphism of the Aileu formation, East Timor
... Lower hemisphere equal area projections of D1, D2 and D3 structural data from three domains of the Aileu Formation north of the Western Laclo and Laclo Faults.. Lower hemisphere equal ar[r] ...
413
Modeling, describing, measuring and interpreting porphyroblast inclusion trails to understand inter-relationships between deformation, metamorphism and tectonism
... next deformation forming with a steeply dipping axial ...the deformation at overall low strains is then only possible though the development of new millipedes that affect earlier formed ones at a smaller ...
124
Deformation and metamorphism of the Sukhothai fold belt, northern Thailand
... Appendix A Catalogue of rock specimens Appendix B Electron microprobe analyses of minerals in metasediments of the Pha Som Metamorphic Complex Appendix C Electron microprobe analyses of [r] ...
408
Modeling, describing, measuring and interpreting porphyroblast inclusion trails to understand inter-relationships between deformation, metamorphism and tectonism
... Figure 5: (a-f) Simplified strain field for the full model plus detail around “porphyroblasts”. Effects of shearing only (fixed velocity applied to the top and bottom with these constrained to remain straight and ...
75
Origin, age, and significance of deep seated granulite facies migmatites in the Barrow zones of Scotland, Cairn Leuchan, Glen Muick area
... regional metamorphism exhibit systematic changes in mineral assemblage, primarily as a function of metamorphic ...Barrovian-style metamorphism—identified in metapelites via the progressive appearance of the ...
46
Structure, metamorphism and tectonics of the Central Nepal Himalayas
... Porphyroblasts were initially thought to rotate due to shear on an encompassing foliation as they grew resulting in inclusion trails with a double spiral shape (Rosenfeld, 1970; Schoneveld, 1977). Rather than rotating, ...
117
A study of the anchizone epizone metamorphic transition
... Bevins and Robinson (1988). The low pressure diagenetic to low greenschist facies metamorphism of the Welsh Basin was attributed to diastathermal metamorphism. The Welsh Basin was modelled as a marginal ...
428
Shock Metamorphic Effects in Lunar and Terrestrial Plagioclase Feldspar Investigated by Optical Petrography and Micro-X-Ray Diffraction
... Shock metamorphism, caused by hypervelocity impact, is a poorly understood process in ...shock deformation in plagioclase feldspar; b) expanding the utility of plagioclase feldspar for determining shock ...
131
Rates of retrograde metamorphism and their implications for the rheology of the crust: an experimental study
... within deformation zones where water can be periodically replenished, for example by seismic events, the reaction rate is likely to be sufficiently fast for all water to be consumed between successive ...active ...
20
Structure and metamorphism of the McPartlan Pass Sentinels area
... THIRD GENERATION STRUCTURES F3 Folds The third deformation event PLATE 2.- Strongly annealed quartz grains in produced the dominant folds of this a quartzite with an intense 51 foliation[r] ...
10
Structure, metamorphism and tectonics of the Central Nepal Himalayas
... heterogeneous deformation would be partitioned into the coaxially short- ened zones as ...of deformation suggested by the coaxial geometries of inclusion trails in most porphyroblasts from orogen cores ...
106
Mineralogical Characteristics of Garnet in Garnet Mica Schist and Its Tectonic Significance in the Tongbai Section of the Shangdan Fault Zone
... progressive metamorphism with complex metamorphic ...regional metamorphism, produces progressive metamorphic; after that local pressure in- creased and led to uplift producing temprature cooling down, as ...
16
Middle Paleozoic-Mesozoic boundary of the North Asian craton and the Okhotsk terrane: new geochemical and geochronological data and their geodynamic interpretation
... wedge that existed along the eastern passive margin of the North Asian craton (Parfenov et al., 1995). However, the his- tory and tectonic affinity of several of the continental terranes east of the Verkhoyansk ...
14
Influence of stress, temperature and crystal morphology on isothermal densification and specific surface area decrease of new snow
... Besides SSA, there is certainly a demand for higher-level morphological metrics to characterize snow microstructure. Various physical properties have been shown to be influenced by morphological characteristics beyond ...
14
Zircon inclusion suite analysis of the Ashe Metamorphic Suite, NC : implications for exhumation history of eclogite
... Three distinct orogenies are responsible for the southern Appalachian Mountains: Taconic (about 480 to 460 Ma), Acadian (440 to 350 Ma), and Alleghanian (330 to 265 Ma)(Drake et al, 1989; Hatcher et al., 1989; Osberg et ...
133
Extreme extension across Seram and Ambon, eastern Indonesia: evidence for Banda slab rollback
... through metamorphism and shearing of mafic–ultramafic rocks present in the peridotite complex which overlaid the granites during operation of the shear zone, and so are unrelated to the Taunusa ...
38
Geological Setting Of The New Discovering Gadir Low Sulfidation Epithermal Deposit, Gedabek Ore District, Lesser Caucasus, Azerbaijan
... The Gadir Area has a complex geological structure, and it has become complex with the intrusive masses and breaking structures of different ages and different composition. Lower Bajocian is essentially composed of an ...
7
A study of mineralogical, geochemical and geochronological characteristics and ore genesis in Phuoc Son Gold Deposit Area, Central Vietnam
... The Triassic Ar-Ar ages of the vein-located mica minerals at Bai Dat, Bai Chuoi and Bai Gio are younger than LA-ICPMS zircon U-Pb ages of dacitic porphyry (c.a., 250 Ma; see Chapter 3 for details), and this is ...
286