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Arina Formation

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Porkuniconchus fragilis  n. gen. n. sp. from <span class="search-highlight">Ärina</span> <span class="search-highlight">Formation</span> (Hirnantian), ...
Published: 01 January 2024
Figure 3. Porkuniconchus fragilis n. gen. n. sp. from Ärina Formation (Hirnantian), Reinu quarry, northern Estonia. ( 1, 2 ) Holotype GIT 494-49-1. ( 3 ) Paratype GIT 494-49-2 showing fusiform transverse ornamentation. ( 4 ) Paratypes GIT 494-49-3 and GIT 494-49-4. ( 5 ) Tubeworms
Journal Article
Published: 01 January 2024
Journal of Paleontology (2024) 98 (1): 40–46.
...Figure 3. Porkuniconchus fragilis n. gen. n. sp. from Ärina Formation (Hirnantian), Reinu quarry, northern Estonia. ( 1, 2 ) Holotype GIT 494-49-1. ( 3 ) Paratype GIT 494-49-2 showing fusiform transverse ornamentation. ( 4 ) Paratypes GIT 494-49-3 and GIT 494-49-4. ( 5 ) Tubeworms...
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Image
Wrinkled undersurface of soft-surface encrusters:  A ) Stromatoporoid  Eccl...
Published: 01 September 2017
Fig. 10 . Wrinkled undersurface of soft-surface encrusters: A ) Stromatoporoid Ecclimadictyon , GIT 354-79. B ) Cystoporate bryozoans. Both from Siuge Member, Ärina Formation, Porkuni quarry, Estonia. Scale bar = 10 mm.
Image
Stratigraphy of the reefs discussed in the text. El Paso Group reefs of Tex...
Published: 01 September 2017
Fig. 1 . Stratigraphy of the reefs discussed in the text. El Paso Group reefs of Texas, USA; Chazy Group reefs of New York (NY), Vermont, USA, and Quebec, Canada; Mingan and Romaine Formation reefs of Quebec, Canada; Vasalemma and Ärina Formation reefs of Estonia. Abbreviations: Ord. = Ordovician
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Maps of the geographical position of the reefs discussed in the text. The w...
Published: 01 September 2017
; the reefs of the Mingan and Romaine Formations, Early–Late Ordovician, Quebec, Canada; and the reefs of the Vasalemma and Ärina Formations, Late Ordovician, Estonia. All maps are modified from www.openstreetmap.org ; OpenStreetMap data is licensed under the Open Data Commons Open Database License (ODbL).
Journal Article
Journal: PALAIOS
Published: 01 September 2017
PALAIOS (2017) 32 (9): 584–599.
...Fig. 10 . Wrinkled undersurface of soft-surface encrusters: A ) Stromatoporoid Ecclimadictyon , GIT 354-79. B ) Cystoporate bryozoans. Both from Siuge Member, Ärina Formation, Porkuni quarry, Estonia. Scale bar = 10 mm. ...
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Journal Article
Published: 08 June 2016
Geological Magazine (2017) 154 (4): 683–706.
...) 75 19/101 0.02 0.38 (0.16–0.63) Estonia, Keila Stage* 3799 269 59 (±4) 90 32/294 0.02 0.12 (0.06–0.23) Estonia, reefs Ärina Formation, Porkuni Stage 787 103 51 (±4) 51 Estonia, Vasalemma Formation, Keila Stage 1134 347 46 (±4) 48 Central Sweden, Boda Lst, Pirgu...
Journal Article
Journal: GSA Bulletin
Published: 01 February 2002
GSA Bulletin (2002) 114 (2): 207–225.
... of the subduction style. In the east, we assume the formation of a large wedge with a thickness of 40–50 km, such that rocks underwent blueschist metamorphism and were exhumed before collision between the European and Apulian plates. In the west, the Petit St. Bernard and the Versoyen units were metamorphosed...
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Journal Article
Published: 01 June 2018
Italian Journal of Geosciences (2018) 137 (2): 238–253.
... with their thermo-metamorphic contact aureoles: the Monte Capanne and Porto Azzurro magmatic bodies ( M arinelli , 1959 ; B ortolotti et alii , 2001 ; D ini et alii 2002 ; F arina et alii , 2010 ). While the Monte Capanne body and its contact aureole are well exposed and investigated by several authors ( M...
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Journal Article
Published: 01 September 2008
Russ. Geol. Geophys. (2008) 49 (9): 633–647.
... caused a brief erosional gap ( Fig. 5 , a ), but soon returned to the environments of a very shallow sea in Northern Estonia (Ärina Formation in Fig. 5 , a ) and a 50 to 100–120 m deep open shelf in Southern Estonia (Bernati Member). Fig. 8. Thicknesses of Ordovician zones 1–30 at sites 1–4...
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Journal Article
Published: 01 August 2015
Jour. Geol. Soc. India (2015) 86 (2): 195–210.
...Arina Khan; Rashid Umar; Haris Hasan Khan Abstract A hydrogeochemical study was carried out to assess the groundwater quality in parts of Kali watershed in Bulandshahr and Aligarh district. 42 groundwater samples each were collected from hand pumps in pre-monsoon and post-monsoon period 2012...
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Journal Article
Published: 06 February 2001
Canadian Journal of Earth Sciences (2001) 38 (2): 153–171.
...–Sivers beds, with reefs in the upper unit below the last unconformity. Small “Porkuni” patch reefs 2–3 m thick and <20 m diameter, with tabulate and rugose corals, occur in the lower Hirnantian Arina Formation ( extraordinarius graptolite Subzone), on the northern shelf margin of the Baltic Basin...
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Journal Article
Published: 01 February 2012
Italian Journal of Geosciences (2012) 131 (1): 102–122.
... the formation and maintenance of the bedforms. The Archipelago is dominated by an eastward directed sea current, and subordinately by a westward current. In the two main WNW-ESE and W-E trending channels of the Archipelago, the current flows have formed some longitudinal sand ridges up to 3 km long and 5 m high...
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Series: Geological Society, London, Special Publications
Published: 10 May 2023
DOI: 10.1144/SP532-2022-141
EISBN: 9781786209641
..., increasing in southern direction; Hints and Meidla 1997 ). The Adila Formation is overlain by the Ärina Formation consisting of a basal dolomite and overlying reef limestones, cystoid grainstones and slightly bituminous limestones, interpreted as the back-reef facies, sometimes overlain by a thin bed...
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Series: Geological Society, London, Memoirs
Published: 01 January 2013
DOI: 10.1144/M38.21
EISBN: 9781862396425
... North Estonia, East Latvia Porkuni St, Ärina Fm Meidla (1996 a , b ), Meidla & Tinn (2008) Livonian Tongue Porkuni St, Kuldiga and Saldus formations Ulst et al. (1982) , Meidla (1996 a , b , 2001 , 2003 ), Brenchley et al. (2003) West Lithuania Porkuni St...
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Journal Article
Published: 01 July 2010
The Journal of Geology (2010) 118 (4): 341–362.
... Bündnerschiefer (+ Tasna Unit)   S2418 Griosch Griosch 46°52′51″ 10°19′50″ Inn-Donau Engadine Bündnerschiefer   S1756 Lavranca Ramosch 46°49′46″ 10°22′42″ Inn-Donau Engadine Bündnerschiefer (+ Tasna Unit)   S2419 Arina Serviezell 46°51′12″ 10°25′14″ Inn-Donau Engadine Bündnerschiefer...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2008
DOI: 10.1144/CEV2P.6
EISBN: 9781862393899
... in the case of the South Alpine Zone which is identical with the Southern Alps. The South Alpine Zone is the part of the Alpine edifice to the south of the Periadriatic Line. It forms a southdirected thrust-and-fold belt (a 'retro-wedge' since the formation of the Alps is related to southward subduction...
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