Morphology, kinematics, and dynamics of feathering faults as prospecting-and-exploring criteria for estimation of vein and stockwork bodies

Peculiarities of morphokinematics and structural-dynamic arrangement for feathering faults and their combinations with master faults within transpression and transtension zones are treated with reference to applied problems of prospecting and exploration works. The best-understood among them are disjunctive duplexes and interlock structures. Such structural assemblages control just a significant part of the ore and ore-magmatic objects of vein and stockwork types, many of which host not only large but also unique deposits of gold, tin, tungsten, etc. For example: Muruntau (Uzbekistan), Yakut (e.g., Badran, Progerss), the Russian Prymorye (e.g., Krinichnoe, Askold), and Canadian (Clarence Stream) gold deposits; tin ones of Cornwall and the Russian Komsomolsk (e.g., Pridorozhnoe, Festi-valnoe) and Badzhal (e.g., Pravourmiyskoe) districts; tin-tungsten Chukot (e.g., Iultin) ones and many others. The specified structural assemblages with synchronous many-stage and multiphase ore and ore-magmatic fill are characterized by clear both spatio-temporal and hierarchical orderliness with the quite regular, metallogenically interpretable complex of morphokinematic types of localization, distribution and superposition of ore and magmatic associations (i.e. dynamozonality). It is supposed to result from stepwise (along with master faults' growth) enlargement of transpression/transtension areal with its structural geometry complexification from initially large feathering forms to more and more small ones with direct or indirect superposition of deformation plans. The superposition per ce lies in the fact that later generations of ore-bearing faults adapt themselves to/under network of preexisting fault generations that frequently effects in kinematic transformation of faults of earlier origin. Thus, the disclosure (even at the stage of geological mapping) of any series of closely connivent (often near-parallel) veined-ore bodies (dyke ones included) together with often vein-and-ingrained mineralization between them can prove to connote staging for space prospecting geological-and-geophysical and geochemical works. As the series proves most likely to be componentry of either splay and or duplex/(interlock, generally) feathering system of master faults, knowledge of whose geometry can additionally serve as a basis to set direction and density of a prospecting network as well as a choice of an equal procedure of mine-economic management strategy. For the detailed, prospecting-and-exploring works at such objects the morphogenetic and kinematic peculiarities of both feathering and master faults per ce are significant as effective geological-and-geometrical criteria to recognize and to contour ore shoots' systems of different orientations with their blockage (ore reserve calculation included) as well as to solve problems of local forecast in/outside of a property line.

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