Provenance of ArenitesG.G. Zuffa Gian Gaspare Zuffa Dipartimento di Scienze della Terra Universitä della Calabria 87030 Castiglione Cosentino Stazione, Cosenza, ITALY The tradition has been to consider Sedimentology and Sedimen tary Petrology as quite separate areas of research. It is however impossible to arrive at an optimal description of sedimentary rocks without integrating the two fields since sedimentary processes and compositional aspects are strongly intertwined. The study of arenites is of particular importance in obtaining paleogeographic and paleotectonic reconstructions aimed at deter mining the geodynamics of the earth's crust. It also has important implications in exploration for and exploitation of hydrocarbons. At the NATO ASI Meeting on Reading Provenance from Arenites held in Calabria (Italy), June 3-ll, 1984, field sedimentologists and sedimentary petrologists were given opportunity to pool their resources in order to obtain better analyses of both source areas and depositional basins. The papers collected in this volume represent an edited ver sion of the lectures given and provide a comprehensive picture of the present state of the art since they include such important top ics as: l) the climate and relief of the source areas, 2) mechani cal transport of sediments and depositional processes, 3) postdep ositional processes, and 4) the methodology adopted for petrogra phic optical analyses. Particular attention has been paid to the limitations and errors introduced into paleogeographic and paleo tectonic reconstructions by incomplete and incorrect data. |
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Page 294
... continental origin followed by fluvial transportation to the sea and therefore , the presence of a landmass in the vicinity of the sampled formation . Another case of inheritance is that of glaucony . This case is especially difficult ...
... continental origin followed by fluvial transportation to the sea and therefore , the presence of a landmass in the vicinity of the sampled formation . Another case of inheritance is that of glaucony . This case is especially difficult ...
Page 338
... continental blocks , and gives key aspects of derivative sand compositions . Figure 1 shows nominal fields proposed within QtFL / QmFLt diagrams for discrimination of sands derived from various types of provenances in continental blocks ...
... continental blocks , and gives key aspects of derivative sand compositions . Figure 1 shows nominal fields proposed within QtFL / QmFLt diagrams for discrimination of sands derived from various types of provenances in continental blocks ...
Page 341
... Continental Eastman 85 21818 ban lissall ) y Qm Merger of Fields for Mature Rocks with Stable Frameworks qulay S labo Decreasing Maturity or Stability MAGMATIC ARC PROVENANCES Subduction Complex Sources tion Mixed Op CONTINENTAL BLOCK ...
... Continental Eastman 85 21818 ban lissall ) y Qm Merger of Fields for Mature Rocks with Stable Frameworks qulay S labo Decreasing Maturity or Stability MAGMATIC ARC PROVENANCES Subduction Complex Sources tion Mixed Op CONTINENTAL BLOCK ...
Contents
INFLUENCE OF TRANSPORT PROCESSES AND BASIN GEOMETRY ON SAND | 19 |
LOCAL MORPHOLOGIC CONTROLS AND EFFECTS OF BASIN GEOMETRY | 47 |
TURBIDITE SYSTEMS AND THEIR RELATIONS TO DEPOSITIONAL | 67 |
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albitization America Bull arenites arkosic authigenic Basu calcite carbonate cathodoluminescence channel channel-fill chemical chert clastic clasts clay climate Cratonic Cretaceous crystals deep-sea depositional depth detrital detrital modes detrital quartz diagenesis diagenetic Dickinson dissolution electron environments Eocene epidote extrabasinal facies feldspar Figure flows fluvial flysch Formation garnet Geol Geology glaucony green grains heavy minerals hydraulic indicate interpretation intrabasinal Jour K-feldspar Krinsley magmatic arcs marine berthierine metamorphic rocks monocrystalline quartz Monterey Fan Mutti Normark Odin origin orogenic parent rocks particles petrofacies petrographic Petrology plagioclase Plate plutonic polycrystalline pores porosity processes provenance quartz quartz grains quartzose ratios recycled orogenic result Ricci Lucchi rock fragments samples sand grains sands derived sandstones sea level secondary porosity sedimentary Sedimentology sediments sequences slope source area source rocks stage submarine fans substrate Suczek Suttner terrigenous tion transport turbidite turbidite systems turbidity currents types undulosity uplift Valloni volcanic weathering Zinkernagel zone Zuffa