1-20 OF 74 RESULTS FOR

Diamantina Zone

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 01 November 2004
Bulletin de la Société Géologique de France (2004) 175 (6): 629-641.
... of the Diamantina Zone, and (3) an Eocene oceanic domain. The continental breakup zone is believed to be located near or at the southern edge of the MQZ [Cande and Mutter, 1982; Veevers et al. , 1990; Sayers et al. , 2001]. Breakup is dated at 125 Ma [Stagg and Willcox, 1992], 95 ± 5 Ma [Veevers, 1986] or at 83 Ma...
Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP282.12
EISBN: 9781862395305
... for rifting and breakup. In this paper we present a new integrated interpretation of deep MCS, gravity and magnetic data across the southern margin of the Naturaliste Plateau and adjacent Diamantina Zone (the Naturaliste–Diamantina margin), and a new interpretation of data from the central Great Australian...
FIGURES | View All (10)
Journal Article
Journal: GSA Bulletin
Published: 01 May 1990
GSA Bulletin (1990) 102 (5): 563-579.
... Cretaceous time; differential subsidence, probably thermal in origin, and development of carbonate mounds and a major western boundary transform fault in Late Cretaceous time; renewed subsidence near the Cretaceous-Tertiary boundary possibly related to formation of the Labuan Basin/Diamantina Zone by sea...
Journal Article
Journal: Geology
Published: 01 July 1986
Geology (1986) 14 (7): 589-593.
... of the Diamantina zone. Samples of rock obtained by free-fall grabs suggest that the southern Kerguelen Plateau contains continental crust. Geological Society of America 1986 ...
Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 612-624.
...Nina Daneu; Aleksander Rečnik; Werner Mader Abstract We studied the atomic structure and the chemical composition of (101)-type rutile (TiO 2 ) twins from Diamantina in Brazil by electron microscopy methods to resolve the mechanism of their formation. The twin boundaries were studied in two...
FIGURES | View All (8)
Journal Article
Published: 01 November 2007
American Mineralogist (2007) 92 (11-12): 1789-1799.
...Nina Daneu; Herbert Schmid; Aleksander Rečnik; Werner Mader Abstract Rutile (TiO 2 ) twins from Diamantina in Brazil were investigated using analytical transmission electron microscopy methods. High-resolution transmission electron microscopy (HRTEM) imaging of (301) twinned rutile revealed...
FIGURES | View All (10)
Image
Burial and exhumation history along a profile across Chapada <b>Diamantina</b> and...
Published: 01 May 2012
Figure 8. Burial and exhumation history along a profile across Chapada Diamantina and the rift basin, based on the topographic profile shown in Figure 1B and a geological cross section offshore ( Menezes and da Silva Milhomen, 2008 ). (A) Ca. 78 Ma: Campanian maximum burial of the Lower
Journal Article
Journal: Economic Geology
Published: 01 December 2009
Economic Geology (2009) 104 (8): 1265-1276.
... observations presented here, has implications for the prospecting of “unconventional deposits” of Au, Pd, and Pt. Platiniferous minerals and palladiferous gold deposits occur along a north-trending zone from Ouro Preto toward Diamantina (Fig. 1 ). In the Quadrilátero Ferrífero and Itabira district, Pt...
FIGURES | View All (4)
Journal Article
Published: 11 December 2002
Canadian Journal of Earth Sciences (2002) 39 (12): 1719-1728.
... improved constraints on the timing of tectonothermal activity along major boundaries. On its northwestern boundary, the Great Falls tectonic zone separates the Archean Wyoming and Hearne provinces. Recently published U/Pb ages and geochemical data reveal the presence of a Paleoproterozoic (ca. 1860 Ma...
FIGURES
Journal Article
Published: 01 September 2005
Journal of the Geological Society (2005) 162 (5): 763-775.
...Rian A. Dutch; Martin Hand; Chris Clark Abstract Palaeoproterozoic to early Mesoproterozoic metamorphic rocks of the Curnamona Province, southern Australia, are crosscut by a system of regional-scale shear zones that locally dominate the terrain. Combined metamorphic and geochronological data from...
FIGURES | View All (8)
Journal Article
Journal: Economic Geology
Published: 01 July 2001
Economic Geology (2001) 96 (4): 723-742.
... II vein and alteration hornblendes have 40 Ar/ 39 Ar ages of 1530 ± 3 Ma. Biotite from the same stage has an 40 Ar/ 39 Ar age of 1521 ± 3 Ma. Muscovite from a postore shear zone has an 40 Ar/ 39 Ar age of 1514 ± 3 Ma. These results provide a maximum (ca. 1530 Ma) and minimum (ca. 1514 Ma) age...
FIGURES | View All (9)
Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP346.9
EISBN: 9781862395947
... by reworking of valley and piedmont sediments in a non-basinal landscape of low-relief ridge and valley topography. These dunefields cover large areas of the arid zone and semi-arid zone and small areas of dunes in sub-humid areas around the margins of the continent reflecting past expansion of arid climates...
FIGURES | View All (11)
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP369.4
EISBN: 9781862396173
..., Broken Ridge; NP, Naturaliste Plateau; DZ, Diamantina Zone; BrB, Bremer Basin; GAB, Great Australian Bight; GC, Gawler Craton; OB, Otway Basin; STR, South Tasman Rise; BFZ, Balleny Fracture Zone; WR, Williams Ridge; LB, Labuan Basin; KP, (southern) Kerguelen Plateau; BR, Bruce Rise; WL, Wilkes Land; TA...
FIGURES | View All (13)
Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP407.13
EISBN: 9781862396951
... Abstract The cultural heritage of Brazil built with natural stone is expressive and shows a great variety of rock types. The main differences between rock types are found when a comparison is made between the buildings located in the coastal zone and those located inland. In historical cities...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP424.2
EISBN: 9781862399563
... Inlier) and the Gawler Craton. Eastward growth of the North Australian Craton occurred during the accretion of the Numil Terrane and the Abingdon Seismic Province, which forms part of a broader zone of collision between the northwestern margins of Laurentia and the proto-North Australian Craton...
FIGURES | View All (16)
Series: GCSSEPM
Published: 01 December 2015
DOI: 10.5724/gcs.15.34.0576
EISBN: 978-1-944966-00-3
... Abstract The Equatorial Atlantic evolved from a transform margin to an oblique-passive margin from the early rifting to early drifting stages. The entire Equatorial region of the South Atlantic behaved as a global-scale accomodation zone linking the evolving Central and Southern Atlantic...
Journal Article
Published: 10 April 2019
Petroleum Geoscience (2019) petgeo2018-151.
... and geothermal reservoirs, and are often associated with high-permeability zones, but also pose significant challenges in drilling and reservoir management. Here, we expand on the observed interplay between fractures, fluid flow and large cave systems, using outcrop analysis, drone imagery and fluid-flow...
FIGURES | View All (11)
Journal Article
Journal: Economic Geology
Published: 01 March 2004
Economic Geology (2004) 99 (2): 233-255.
... along the extent of the main economic zone. Four styles of mineralization have been differentiated at the deposit. Layer-parallel, disseminated sphalerite comprises low-grade occurrences of Zn, whereas the bulk of ore is contained within sphalerite and galena veins and breccias that record a prolonged...
FIGURES | View All (15)
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2423(01)
... Shear Zone between 670 and 620 Ma and 630- to 610-Ma sinistral shearing in the Dom Feliciano belt farther east. The episodic character of orogenic evolution can be observed throughout Brazil. The Brasiliano belts cannot be directly linked with pan-African belts in southwestern Africa because main...
Journal Article
Journal: Economic Geology
Published: 01 September 2006
Economic Geology (2006) 101 (6): 1117-1157.
... a function of temperature. In both basin types, regional alteration zones have lost, and probably were the source of, Zn and Pb. The contrasting fluid types require different depositional mechanisms and traps to accumulate metals. The higher temperature, reduced VHMS- and Broken Hill-type fluids deposit...
FIGURES | View All (21)