Glauberite crystal cavities in Triassic

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Journal Article
Published: 01 January 1919
American Mineralogist (1919) 4 (1): 1–4.
...George W. Stose Abstract Among the specimens of Triassic rocks collected during the survey of the Fairfield and Gettysburg quadrangles, Pennsylvania, for folio publication, certain dark shales and hardened altered shales with molds of crystals were obtained, and were sent with specimens...
Journal Article
Published: 01 September 1916
American Mineralogist (1916) 1 (3): 36–43.
...Edagr T. Wherry Abstract A t a number of places in eastern Pennsylvania the Triassic rocks contain numerous cavities, or calcite pseudomorphs, which show by their angular form that they were originally occupied by a crystalline mineral. Study of specimens of these has demonstrated the original...
Journal Article
Published: 10 March 2015
Journal of the Geological Society (2015) 172 (3): 336–348.
... al. 1985 ). The Madonna Taz-Zejt 1ST1 borehole, drilled on land in western Gozo ( Fig. 1 ), proved a 3200 m thick Late Triassic succession from a depth of 4.5 km, consisting of dolomites, shales and metres-thick anhydrite beds, the last with an aggregate thickness of c . 230 m ( Debono et al...
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Journal Article
Journal: AAPG Bulletin
Published: 15 September 2019
AAPG Bulletin (2019) 103 (9): 2073–2115.
... (0.2 to 0.6 in.). Most of the lithophysae have been semifilled by bitumens. The matrix consisted of plastic rock debris, vitric debris, crystal fragments, and fine-grained volcanic ash, which was welded together when still hot and sticky. (2) Volcanic breccias are angular and are red in color ( Figure...
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Journal Article
Journal: Geosphere
Published: 01 June 2016
Geosphere (2016) 12 (3): 721–767.
... clastics and anhydrite ( Figs. 6B, 6C, and 6E ). Generally, the halite layers are massive, pure, and poorly bedded. In addition, salt crystals are clear, lack primary sedimentary features, generally exceed 2 cm in length ( Fig. 6A ), and range up to 10 cm long. Some of the halite fills dissolution cavities...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2002
DOI: 10.1144/GOSPP.19
EISBN: 9781862393912
... at the Palaeozoic–Triassic unconformity, and linked to Alpine-related fractures (La Carolina, Aldeaquemada and Baños de la Encina (Jaén)). Ossa-MorenaZone : (i) vein mineralizations in plutonic and metamorphic rocks of the well known old mining district of Villaviciosa (Córdoba); (ii) infill of karstic cavities...
Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP285.18
EISBN: 9781862395336
... ( Kovalevich 1988 , 1990 ). In the Phanerozoic seawater chemistry oscillated between the Na–K–Mg–Ca–Cl and Na–K–Mg–Cl–SO 4 types. From the Cambrian to Carboniferous and from the Jurassic to middle Paleogene the Na–K–Mg–Ca–Cl type prevailed, while in Permian and Triassic as well as starting in the middle...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2007
DOI: 10.1144/GOCH.7
EISBN: 9781862393936
... of especial interest because they are the only such deposits in the world. The dolomite ore deposits are Lower Cretaceous marine carbonates in Regions II and IV, as well as Neogene volcanosedimentary deposits in Region I. There are also some Triassic dolomites in the Precordillera of Region II. Another...
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