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gravity and aeromagnetic studies of the filabusi greenstone

Geophysics of the Midcontinent Rift Region | U.S. Geological Survey

Geologic studies in this region are hampered by a scarcity of bedrock exposures because of a nearly continuous blanket of unconsolidated sediments resulting from glaciation of the region during the Plei ... Large amplitude aeromagnetic and gravity anomalies over a ~9500 km2 area of northeast Iowa and southeast Minnesota have been interpreted to ...

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Structural geology and regional tectonics of the South ... - Earthdoc

We are interested in the crustal evolution of the area, in particular the spatial and temporal relationships between the greenstone successions and the surrounding granitoids. The study also pursues the relationships between the pattern, age and origin of structural features and the location of ore deposits.

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3D geophysical and geological modelling of the Karasjok Greenstone Belt

3D geophysical and geological modelling of the Karasjok Greenstone Belt. Skaar, Jon Are Aagård. Master thesis

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The Geology of the Belingwe Greenstone Belt, Zimbabwe

Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt, Zimbabwe Craton: Regional and Geotectonic Implications R. T. Ranganai Geology 2012 The Filabusi greenstone belt (FGB), Zimbabwe craton, has been geologically remapped relatively recently but its regional tectonic setting and subsurface structure have, until now, remained. Expand 4

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(PDF) STRUCTURAL AND SUBSURFACE RELATIONSHIPS BETWEEN ... - Academia.edu

A geophysically constrained litho-structural analysis of the Eburnean greenstone belts and associated granitoid domains, Burkina Faso, West Africa By Lenka Baratoux and Vaclav Metelka A re-appraisal of the Epoch nickel sulphide deposit, Filabusi Greenstone Belt, Zimbabwe: A hydrothermal nickel mineral system?

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Aeromagnetic study of the Hengshan-Wutai-Fuping ... - ScienceDirect

To study the causative bodies transiting downwards through the upper crust (5 ~ 10 km) to the middle (10 ~ 15 km) or even the lower crust (15 ~ 20 km), the upward continuation was applied on reduced-to-pole aeromagnetic data at levels of 5 km, 10 km and 30 km, which accordingly focus on the anomalies beneath the approximate depths of 2.5 km, 5 ...

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An aspect of the subsurface structure of the Burdur ... - SpringerOpen

Gravity and aeromagnetic analyses were conducted in the Burdur-Isparta area of Turkey in order to identify the subsurface structure and tectonics of the region independent of surface cover. The analytic signal of the aeromagnetic anomalies was first calculated to delineate the source fields of these anomalies. The magnetic signatures were found to correlate well with the intrusives associated ...

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Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt ...

among the geophysical techniques, the gravity method is particularly suited to determination of the bulk geometries of plutons as they invariably show a strong density contrast with the surrounding...

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Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt ...

the objectives of this paper are to present gravity and aeromagnetic studies undertaken in the filabusi granite- greenstone terrain to 1) determine greenstone belt sub- surface configuration and tectonic setting, 2) extend geo- logical and structural mapping to the near subsurface and areas of poor rock exposure, and hence 3) provide cons- .

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t. harmouch - Articles - Scientific Research Publishing

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Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt ... - CORE

Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt, Zimbabwe Craton: Regional and Geotectonic Implications

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Franco Pirajno - Academia.edu

A re-appraisal of the Epoch NiS deposit, Filabusi greenstone belt, Zimbabwe: a case for hydrothermal Ni? more by Franco Pirajno The Epoch NiS deposit, discovered in 1970 and subse quently mined from 1972 to 1998, has been considered as a magmatic ore system.

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Geological Society of Zimbabwe

The Filabusi greenstone belt (FGB), Zimbabwe craton, has been geologically remapped relatively recently but its regional tectonic setting and subsurface structure have, until now, remained unresolved. This paper presents gravity and aeromagnetic studies that have been

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Archean Greenstone Belts Are Not Oceanic Crust

we review the tectonic setting and stratigraphy of a number of greenstone sequences previously interpreted as archean ophiolites and conclude, on the basis of basal unconformities, presence of xenocryst zircons, geochemical and isotopic evidence for crustal contamination, intrusive relationships with older basement and their internal .

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Potential Greenstone Belt Continuity Undercover, Zimbabwe

Possible undercover continuity and thickening of the Harare-Shamva greenstone belts to the E is tested by applying petrophysical measurements, and direct 2D joint gravity and magnetic modeling using Geosoft-GM- SYS software by integrating the potential field data and available geological information.

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[Pdf] the Geology and Structure of The Masvingo Greenstone Belt and ...

The structure and subsurface configuration of the Masvingo Greenstone Belt (MGB) in the Zimbabwe Craton (ZC), were investigated using aeromagnetic and gravity data. Gravity data from 158 new and 202 old gravity stations were combined to produce a Bouguer gravity map covering the greenstone belt and surrounding granites.

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Computing the gravitational and magnetic anomalies due to a polygon ...

We present two algorithms for computing the gravitational and magnetic anomalies due to an n‐sided polygon in a two‐dimensional space. Both algorithms have been implemented as subroutines coded in ...

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Computing the gravitational and magnetic anomalies due to a polygon ...

We present two algorithms for computing the gravitational and magnetic anomalies due to an n‐sided polygon in a two‐dimensional space. Both algorithms have been implemented as subroutines coded in Fortran-77, and listings are provided.

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Gravity anomaly patterns in the south-central Zimbabwe Archaean craton ...

Gravity and magnetic methods cannot reveal the true shape of the greenstone bodies beneath the broad basins, but can be used to place bounds on their thickness and nature of side contacts. Gravity and density measurements which form the basis of this study are briefly described below.

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zimbabwe geological service mineral resource series 23

u.s. geological survey bulletin 2044. this report summarizes the mineral resource assessment, the geologic framework, a high resolution aeromagnetic survey, Wyoming State Geological Survey has significant strategic mineral resources of low-grade copper, gold, layered mafic complexes are divisible into a lower ultramafic series and an.

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Physics - UB

The Filabusi greenstone belt (FGB), Zimbabwe craton, has been geologically remapped relatively recently but its regional tectonic setting and subsurface structure have, until now, remained unresolved. This paper presents ...

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Gravity anomaly patterns in the south-central Zimbabwe Archaean craton ...

In this study, gravity data from 485 new stations are combined with those from 865 previously ... Bulawayo, Filabusi, Fort Rixon and Gwanda greenstone belts, 'young' K-rich gran-ites (e.g., Chivi Granite) and sections of the Great Dyke and its satellites (East and Umvimeela dykes), set within ancient tonalitic gneisses (Fig. 1). The main ...

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African Journal of Science and Technology (AJST) EULER DECONVOLUTION ...

1995, 2008). The geophysical studies involve gravity and aeromagnetic data, and a number of greenstone belt gravity models have been derived (Ranganai et al., 2008). However, the aeromagentic studies have so far only provided a qualitative interpretation with an indication of where changes in magnetic susceptibility occur, but not what

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An aspect of the subsurface structure of the Burdur Isparta area, SW ...

Earth Planets Space, 59, 5?12, 2007 An aspect of the subsurface structure of the Burdur Isparta area, SW Anatolia, based on gravity and aeromagnetic data, and some tectonic implications M

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Reduced to pole aeromagnetic map of the Masvingo granite-greenstone ...

The structure and subsurface configuration of the Masvingo Greenstone Belt (MGB) in the Zimbabwe Craton (ZC), were investigated using aeromagnetic and gravity data. Gravity data from 158 new and...

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10.1016/j.jafrearsci.2013.05.001 | DeepDyve

Read "10.1016/j.jafrearsci.2013.05.001" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Gravity and Aeromagnetic Studies of the Santo Domingo Basin Area ... - USGS

aeromagnetic data in more detail for the Cochiti Pueblo area. Finally, we summarize the salient results that were used to construct the three-dimensional geologic framework described in chapter G (this volume). Gravity Data and Methods Regional gravity studies have been critical in the defini-

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Cascadia Subduction Zone Database | U.S. Geological Survey

Jul 5, 2022Data from lower resolution aeromagnetic datasets are in shown with higher transparency, high resolution datasets are highlighted in bright tones. Gravity anomalies. Raster image of compiled gravity surveys, gridded at 2000 m spacing. Color scale from high (white/pink) to low (blue) isostatic residual gravity anomalies measured in milligals (mGal).

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Configuration of Late Archaean Chilimanzi and Razi ... - SpringerLink

Notable examples include a large amplitude N-S gravity anomaly high of the Belingwe greenstone belt (BGB), large gravity anomaly lows over the Chivi granite and Zimbabwe granite adjacent and parallel ... R. T. (2012). Gravity and aeromagnetic studies of the Filabusi Greenstone Belt, Zimbabwe Craton: Regional and Geotectonic Implications. ...

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Gravity, aeromagnetic and electromagnetic study of the gold and pyrite ...

The Bouguer gravity anomalies in the study area (Fig. 3b) range from about −6 mGal to 17 mGal. The low gravity values correlate well with the Carboniferous Pageland and Liberty Hill granites (Fig. 2b) because of the granites lower density (2.63 g/cc) than the surrounding metamorphic country rock (Table 2).

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Aeromagnetic interpretation in the south-central ... - SpringerLink

The magnetic lineament patterns cut across the >2.7 Ga greenstone belts, which are shown by gravity data to be restricted to the uppermost 10 km of the crust. Therefore, the greenstone belts were an integral part of the lithosphere before much of the upper crustal (brittle) deformation occurred.

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Bouguer Gravity Anomalies - Articles - Scientific Research Publishing

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Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt ...

the objectives of this paper are to present gravity and aeromagnetic studies undertaken in the filabusi granite- greenstone terrain to 1) determine greenstone belt sub- surface configuration and tectonic setting, 2) extend geo- logical and structural mapping to the near subsurface and areas of poor rock exposure, and hence 3) provide cons- .

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N. Baglow, "The Geology of the Filabusi Granite-Greenstone Terrain ...

Isolated oval shaped small gravity lows generally correlate with sub-/out-cropping K-rich post-volcanic granite plutons. 2.5D gravity models along three profiles across the greenstone belt show a simple "basin shape" with a possible maximum depth extent of only 4.5 km, compared to an estimated stratigraphic thickness of about 9.0 km.

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Aeromagnetic and Landsat TM structural interpretation for identifying ...

The study area is the south-central part of the Archaean Zimbabwe Craton and lies between latitudes 19.9°S and 21.1°S and longitudes 28.9°E and 30.5°E, with several rural service centres and mining towns located throughout the area ().A relatively detailed description of the regional geology and tectonic setting can be found elsewhere (e.g., Greenbaum, 1992a, Wilson et al., 1995, Campbell ...

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Gravity and Aeromagnetic Studies of the Filabusi Greenstone Belt ...

Isolated oval shaped small gravity lows generally correlate with sub-/out-cropping K-rich post-volcanic granite plutons. 2.5D gravity models along three profiles across the greenstone belt show a simple "basin shape" with a possible maximum depth extent of only 4.5 km, compared to an estimated stratigraphic thickness of about 9.0 km.

WhatsApp:+8617329420102

Potential Greenstone Belt Continuity Undercover, Zimbabwe

The Zimbabwean craton is one of the most metal-endowed cratons on the Earth with abundant deposits of Au, Ni, Cr and PGE that are spatially and genetically associated with greenstone belts. This study aims at tracing the possible undercover continuity of these greenstone belts. A conjunctive interpretation of regional-scale geological, gravity and magnetic data was carried out, focusing on the ...

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marije t. elferink-gemser - Articles - Scientific Research Publishing

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Generation and interpretation of geophysical images with examples from ...

Composite images generated using three different geophysical parameters show correlations between the magnetic, gravity, and radiometric data which can be related to the geology. Subtle variations in uranium, thorium, and potassium concentrations determined by gamma ray spectrometry can be effectively displayed using ternary radioelement images

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A.E. Phaup Award 2013

gravity and aeromagnetic data. South African Journal of Geology, Vol. 116 (2), pp. 273-296. ... Department of from where he continues with studies on ... the Masvingo and Filabusi greenstone belts respectively. Highlights of the paper • Theaper p resulted from comprehensive work including gravity surveys to complement

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