plus Cretaceous and Recent contaminants

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Journal Article
Published: 01 August 2001
The Canadian Mineralogist (2001) 39 (4): 997-1020.
... of a mantle plume, thus supporting recent suggestions that a large igneous province once occupied the high Arctic area (HALIP) and that it formed above a long-lived Cretaceous mantle plume ( Tarduno 1998 , Maher 2001 ). If this inference is correct, the results have important implications with respect...
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Journal Article
Published: 01 February 2012
Geochemistry: Exploration, Environment, Analysis (2012) 12 (1): 3-20.
.... As a final contribution, a geochemical background and a present-time baseline for Bolivian highlands sediments are provided, which will be helpful for the improvement of environmental legislation and for the future interpretation of geochemistry data in contamination and/or pollution studies...
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Journal Article
Published: 01 November 2015
Journal of the Geological Society (2015) 172 (6): 808-821.
...Jin-Yang Zhang; Chang-Qian Ma; Jian-Wei Li; Yuan Ming Pan Abstract An Early Cretaceous highly enriched mantle beneath the Dabie Orogen, previously proposed on the basis of exceedingly enriched isotopic signatures documented in intermediate–mafic–ultramafic complexes, has been re-evaluated by new...
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Journal Article
Journal: The Leading Edge
Published: 01 April 2012
The Leading Edge (2012) 31 (4): 387-391.
... been in production since 1998. It is in production license WA-15-L in the southern Dampier sub-basin, on Australia's North West Shelf ( Figure 1 ). The reservoir consists of unconsolidated early Cretaceous middle M. australis sand (informally referred to as the Stag sand), which has been divided...
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Journal Article
Published: 01 June 2017
Bulletin of Canadian Petroleum Geology (2017) 65 (2): 235-261.
... to early Cretaceous, representing the most extensive karsting. Recently, Al-Aasm (2000) examined the chemistry and isotopic signatures of multiple Mississippian dolomite generations in different formations throughout the Western Canada Sedimentary Basin and concluded that the recrystallization...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 2017
AAPG Bulletin (2017) 101 (3): 387-418.
...Lucy T. Ko; Robert G. Loucks; Stephen C. Ruppel; Tongwei Zhang; Sheng Peng ABSTRACT Recent studies have shown that the loss of primary pores and the development of secondary pores in mudrocks are primarily controlled by burial diagenesis of the mineral matrix and thermal maturation of organic...
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Journal Article
Published: 01 July 2010
Bulletin de la Société Géologique de France (2010) 181 (4): 315-326.
... work on a new hydrotherapy center gave fresh impetus to research into the karstification of the Aix-les-Bains thermo-mineral aquifer. Recent studies have also investigated the deep aquifer below the karst, using data provided by boreholes. The Urgonian limestone karst at Aix-les-Bains is the site...
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Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 217-232.
... compositions plus fortement radiogéniques typiques des filons alcalins d’âge triassique à Seabrook, au New Hampshire, et des tholéiites d’âge jurassique précoce. Ces rapports témoigneraient d’une contamination dans la croûte inférieure. Les lamprophyres ressemblent, par leur âge et leur composition...
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Series: AAPG Studies in Geology
Published: 01 January 2013
DOI: 10.1306/13371582St643554
EISBN: 9781629812649
... assemblages are indicative of the southward-transgressing Clearwater Sea. Assemblages may be dominated by species of Circulodinium (C. deflandrei and C. brevispinosum), Odontochitina operculata, Oligosphaeridium spp., Palaeoperidinium cretaceum plus a host of accessory taxa indicative of stressed...
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Journal Article
Published: 01 October 2009
Journal of Foraminiferal Research (2009) 39 (4): 322-334.
... from Upper Cretaceous chalks in a diagenetically well-constrained Pacific deep-sea section (Deep Sea Drilling Project Site 463), in conjunction with δ 13 C stratigraphy and revised planktonic foraminiferal zonation, show that the onset of the 87 Sr/ 86 Sr shift might have predated OAE 2, presumably...
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Journal Article
Published: 01 September 2018
Bulletin of Canadian Petroleum Geology (2018) 66 (3): 695-724.
... in the Early Cretaceous Bluesky Formation of Alberta’s Peace River oil sands deposit has recently experienced a resurgence (e.g. Hubbard et al., 1999 ; 2002; 2004; Mackay and Dalrymple, 2005 ; 2008; 2011; Botterill et al., 2015 ; 2016; Campbell et al., 2016 , and others). In an effort to better understand...
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Journal Article
Published: 01 March 2018
Bulletin of Canadian Petroleum Geology (2018) 66 (1): 161-174.
... felsiques avec probabilité de contamination crustale. Tous les échantillons des Formations de Montney et de Doig montrent des zones géochimiques similaires; cependant, les différences entre les zones Y et Yb laissent penser que les échantillons-sources de Doig étaient exposés à des degrés plus élevés de...
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Journal Article
Journal: Clay Minerals
Published: 01 March 2006
Clay Minerals (2006) 41 (1): 151-186.
... meteoric flushing associated with lower Cretaceous uplift and erosion, though it is found in fault blocks that are thought to have remained below sea level. Here, the kaolin may form in stagnant meteoric water, relics of the post-depositional porewater. It has also been proposed that the blocky kaolin grew...
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Journal Article
Published: 01 June 2006
The Canadian Mineralogist (2006) 44 (3): 715-729.
... rutile. Le rutile est une phase rare d’origine étrangère dans les roches les plus primitives du batholite, et une phase plus commune d’origine magmatique dans les roches moyennement à fortement évoluées du batholithe. Les grains de rutile mesurent de 0.04 à 0.28 mm (rarement, 0.54 mm) et peuvent...
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Series: GSA Field Guide
Published: 01 January 2008
DOI: 10.1130/2007.fld010(02)
EISBN: 9780813756103
... mantle with minor crust-al contamination; the more felsic rocks crystallized from hybrid melts that represent mixtures of juvenile basaltic magma + crustal melt, or products of anatexis of ancient crust + young mafic magmas that underplate the crust during extension. Although emplacement generally...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2001
GSA Bulletin (2001) 113 (11): 1486-1502.
...Kent Ratajeski; Allen F. Glazner; Brent V. Miller Abstract The intrusive suite of Yosemite Valley provides an excellent example of coeval mafic and felsic magmatism in a continental- margin arc. Within the suite, hornblende gabbros and diorites associated with the Cretaceous El Capitan and Taft...
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Journal Article
Published: 01 June 2005
The Canadian Mineralogist (2005) 43 (3): 899-908.
... ), arsenides ( Förster et al. 2004 ), tellurides ( Förster 2004a ), and native metals was deposited during three major mineralizing events, between the Permian and Cretaceous periods (Förster & Haak 1995). A recent detailed survey of the mineral parageneses by electron microprobe revealed...
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Journal Article
Published: 01 October 2009
The Canadian Mineralogist (2009) 47 (5): 1117-1135.
... as well as time. Recent research on the genesis of southern African Cretaceous kimberlites reveals that the source regions of both Group-I and Group-II kimberlites lie within the subcontinental lithospheric mantle (SCLM), but were contrastingly metasomatized by (i) plume (asthenosphere)-related fluids...
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