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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Radiaxial-Fibrous And Fascicular-Optic Mg-Calcitic Cave Cements: A Characterization Using Electron Backscattered Diffraction (Ebsd), Detlev K. Richter, Adrian Immenhauser, Rolf Dieter Neuser, Augusto Mangini
Radiaxial-Fibrous And Fascicular-Optic Mg-Calcitic Cave Cements: A Characterization Using Electron Backscattered Diffraction (Ebsd), Detlev K. Richter, Adrian Immenhauser, Rolf Dieter Neuser, Augusto Mangini
International Journal of Speleology
Electron backscattered diffraction (EBSD) applied to crystal fabric research in speleothems aids in our understanding of the origin of those fabrics. A significant advantage of this approach is the three dimensional data set of crystal c-axes. Here, we show a rare case of both convergent (radiaxial-fibrous) and divergent (fascicular-optic) orientations of the c-axes in pool calcites. The seemingly defective structure of the calcite lattice resulting in radiaxial-fibrous crystal orientations is probably caused by differential incorporation of Mg during crystal growth. The observation that radiaxial-fibrous and fascicular-optic fabrics co-exist in the same pool environment is remarkable and documents the complexity of …
Facies Characteristics And Control Mechanisms Of Quaternary Deposits In The Tuz Gölü Basin, Alper Gürbüz, Nizamettin Kazancı
Facies Characteristics And Control Mechanisms Of Quaternary Deposits In The Tuz Gölü Basin, Alper Gürbüz, Nizamettin Kazancı
Bulletin of the Mineral Research and Exploration
Although there are several studies discussing the pre-Neogene development of the Lake Tuz basin, which is the largest terrestrial basin in Turkey, investigations delineating the characteristics of the Neogene and particularly Quaternary period of this basin are quite limited. Whereas studies regarding such periods of the basin are quite informative for both active tectonics and climate change issues that are of significant public concern. In this study, results of field observations on temporal and spatial characteristics of Quaternary deposits in the Lake Tuz Basin and processes controlling these features are presented. For this, as a result of sequence studies conducted …
Critisism On The Paper “ Possi̇ble İnci̇si̇on Ti̇me Of The Large Valleys İn Southern Marmara Regi̇on, Turkey (N. Kazanc›, Ö. Emre, K. Erturaç, S. A.G.Leroy, S. Öncel, Ö. İleri̇, Ö.Toprak)” Appeared İn Bulleti̇n Of The Mi̇neral Research And Explorati̇on 148, 1-17., Nizamettin Kazanci
Bulletin of the Mineral Research and Exploration
No abstract provided.
Microstratigraphic Logging Of Calcite Fabrics In Speleothems As Tool For Palaeoclimate Studies, Silvia Frisia
Microstratigraphic Logging Of Calcite Fabrics In Speleothems As Tool For Palaeoclimate Studies, Silvia Frisia
International Journal of Speleology
The systematic documentation of calcite fabrics in stalagmites and flowstones provides robustness to palaeoclimate interpretation based on geochemical proxies, but it has been neglected because it is difficult to transform crystal morphologies into numerical values, and construct fabric time series. Here, general criteria that allow for coding fabrics of calcite composing stalagmites and flowstones is provided. Being based on known models of fabric development, the coding ascribes sequential numbers to each fabric, which reflect climate-related parameters, such as changes in drip rate variability, bio-mediation or diagenetic modifications. Acronyms are proposed for Columnar types, Dendritic, Micrite, Microsparite and Mosaic fabrics, whose …
Tectono - Sedimentary Evolution Of Bucakkifila Region (Sw Karaman) In Central Taurides, Tolga Esi̇rtgen
Tectono - Sedimentary Evolution Of Bucakkifila Region (Sw Karaman) In Central Taurides, Tolga Esi̇rtgen
Bulletin of the Mineral Research and Exploration
The study area located in Bucakk›flla region in Central Taurides consists of rock units of the
melange which form Bozk›r unit of the Tauride units and the overlying cover rocks. There are
volcanic, ophiolitic and sedimentary rocks which generated in different environmental
conditions. These rock groups comprise units which formed in Middle-Upper Triassic-
Paleocene periods in Inner Tauride Ocean that had been opened between Tauride – Anatolide
continents. Within the scope of this study, lithostratigraphic characteristics of Hu¤lu, Boyal›
tepe (hill), Korualan nappes and cover rocks which form Bozk›r Unit and tectono sedimentary
evolution of the study area was built …
Cave Deposits And Sedimentary Processes In Cova Des Pas De Vallgornera (Mallorca, Western Mediterranean), Joan J. Fornós, Joaquin Ginés, Francesc Gràcia, Antoni Merino Juncadella, Lluís Gómez-Pujol, Pere Bover
Cave Deposits And Sedimentary Processes In Cova Des Pas De Vallgornera (Mallorca, Western Mediterranean), Joan J. Fornós, Joaquin Ginés, Francesc Gràcia, Antoni Merino Juncadella, Lluís Gómez-Pujol, Pere Bover
International Journal of Speleology
The Cova des Pas de Vallgornera is an important and protected coastal cave, located in the southern part of the island of Mallorca, that outstands due to its length and the complex processes involved in its speleogenesis. Although sediments are not the main topic of interest, their presence as well as their paleontological contents are valuable evidence for paleoclimatic and chronological reconstructions of the cave morphogenesis. The sedimentary infilling is characterized by a scarce presence of clastic sedimentation, mainly composed of silts and clays, which can only be found at some minor passages in the innermost parts of the cave. …