1-20 OF 84 RESULTS FOR

scoria

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
Journal: Geology
Published: 26 April 2024
Geology (2024) 52 (7): 565–569.
...M.C. Zarazúa-Carbajal; G.A. Valentine; S. De la Cruz-Reyna Abstract Alluvial processes acting on scoria cones cause the development of a drainage network composed of radially distributed rills and gullies parallel to the volcanic edifice's downslope direction. We quantify the degree of drainage...
FIGURES
Journal Article
Published: 01 June 2023
Italian Journal of Geosciences (2023) 142 (2): 291–315.
...Erdal Şen; Erkan Aydar; Pınar Şen; Alain Gourgaud ABSTRACT The Quaternary Kula Volcanic Field (KVF), located on an E-W trending Plio-Quaternary horst, consists of at least 80 scoria cones, associated fissural lava flows and maars. Volcanic activity is divided into three main stages as BI (ca. 2-0.9...
FIGURES | View All (15)
Series: Geological Society, London, Special Publications
Published: 13 April 2023
DOI: 10.1144/SP520-2022-99
EISBN: 9781786209535
... of basalts ( Fig. 3a–c ), or as black tachylitic glass in andesite. Vitric volcanic lithic fragments (Lvv) are defined as pumice or scoria and glass shards, but also include partially to wholly altered glass ( Dickinson 1970 a ; Ingersoll and Cavazza 1991 ; Marsaglia 1992 ). Every sample has either blocky...
FIGURES | View All (7)
Journal Article
Published: 01 May 2022
American Mineralogist (2022) 107 (5): 930–935.
...Seungyeol Lee; Xiaofeng Guo Abstract Xuite, Ca 3 Fe 2 [(Al,Fe)O 3 (OH)] 3 , is a new member of the garnet supergroup discovered in basaltic scoria from Menan Volcanic Complex, Idaho, U.S.A. Oxidation of Fe-bearing pyroclasts at high temperatures led to the formation of xuite, together...
FIGURES | View All (9)
Series: Geological Society, London, Special Publications
Published: 11 October 2021
DOI: 10.1144/SP510-2020-60
EISBN: 9781786209979
... The current scoria cone lies above the weathered clay layer mantling the earlier scoria cone, and it forms the bulk of the cone of the JLDZ volcano seen today, with a basal diameter of c. 2 km. Overlying the current scoria cone is the spatter cone, which has a bottom diameter of c. 1 km...
FIGURES | View All (10)
Series: Geological Society, London, Memoirs
Published: 27 May 2021
DOI: 10.1144/M55-2018-59
EISBN: 9781786209863
... is distinctive within the volcanic field: it is a well-formed scoria cone. The geology of Seal Nunataks has been described by Fleet (1968) , del Valle et al. (1983) , González-Ferrán (1983 a ) , Hole (1990 a ) , Smellie (1990) and Smellie and Hole (1997) , and of Argo Point by Saunders (1982...
FIGURES | View All (15)
Series: Geological Society, London, Memoirs
Published: 27 May 2021
DOI: 10.1144/M55-2018-62
EISBN: 9781786209863
... have sunk more than 2 km into underlying sedimentary strata. Small submarine volcanoes are also common, as islands and seamounts in the Ross Sea (Terror Rift), and there are many mafic scoria cones (Southern Local Suite) in the Royal Society Range foothills and Dry Valleys. The age of the volcanism...
FIGURES | View All (26)
Journal Article
Published: 30 June 2020
Mineralogical Magazine (2020) 84 (5): 691–698.
...Stanislav K. Filatov; Andrey P. Shablinskii; Sergey V. Krivovichev; Lidiya P. Vergasova; Svetlana V. Moskaleva Abstract Petrovite, Na 10 CaCu 2 (SO 4 ) 8 , is a new sulfate mineral discovered on the Second scoria cone of the Great Tolbachik fissure eruption. The mineral occurs as globular...
FIGURES | View All (5)
Journal Article
Published: 01 May 2020
Russ. Geol. Geophys. (2020) 61 (5-6): 600–610.
...) selection of representative olivine grains with melt inclusions from the >0.5 mm fraction of basaltic scoria from the Karymsky Volcano ( Tobelko et al., 2019 ; sample K6-06); (2) high-temperature experiment on melting of daughter crystal phases in melt inclusions, which contained melt and fluid phase...
FIGURES | View All (5)
Journal Article
Journal: Economic Geology
Published: 01 March 2020
Economic Geology (2020) 115 (2): 279–301.
... onto the outer surfaces of the metal alloy grains either due to a decrease in temperature or an increase in f O 2 . These alloys provide important insights into the partitioning of metals into a magmatic volatile phase at low pressure and high temperature. We examined mafic scoria and lava from hot...
FIGURES | View All (14)
Journal Article
Published: 30 November 2019
The Canadian Mineralogist (2019) 57 (6): 885–901.
... , the high-temperature hexagonal dimorph of thénardite, a natural analogue of the synthetic phase Na 2 SO 4 (I), was found in the sublimates of active fumaroles at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure eruption, Tolbachik volcano, Kamchatka, Russia. The holotype...
FIGURES | View All (9)
Journal Article
Published: 04 November 2019
Mineralogical Magazine (2020) 84 (2): 283–287.
... in the Yadovitaya fumarole of the Second scoria cone of the North Breach of the Great Tolbachik Fissure Eruption (1975–1976), Tolbachik volcano, Kamchatka Peninsula, Russia. Koryakite occurs as a product of fumarolic activity and closely associates with euchlorine and langbeinite. Koryakite is trigonal, R $\bar{3...
FIGURES
Journal Article
Published: 01 September 2019
American Mineralogist (2019) 104 (9): 1238–1245.
...Seungyeol Lee; Huifang Xu; Hongwu Xu; Ryan Jacobs; Dane Morgan Abstract Valleyite, Ca 4 (Fe,Al) 6 O 13 , is a new sodalite-type mineral discovered in late Pleistocene basaltic scoria from the Menan Volcanic Complex near Rexburg, Idaho, U.S.A. It is an oxidation product of basaltic glass during...
FIGURES | View All (7)
Journal Article
Published: 24 June 2019
Mineralogical Magazine (2019) 83 (5): 749–755.
...Oleg I. Siidra; Evgeny V. Nazarchuk; Anatoly N. Zaitsev; Yury S. Polekhovsky; Thomas Wenzel; John Spratt Abstract Dokuchaevite, ideally Cu 8 O 2 (VO 4 ) 3 Cl 3 , was found in the Yadovitaya fumarole of the Second scoria cone of the North Breach of the Great Tolbachik Fissure Eruption (1975–1976...
FIGURES | View All (5)
Journal Article
Published: 24 June 2019
Mineralogical Magazine (2019) 83 (6): 847–853.
...Oleg I. Siidra; Evgeny V. Nazarchuk; Atali A. Agakhanov; Yury S. Polekhovsky Abstract Aleutite, ideally [Cu 5 O 2 ](AsO 4 )(VO 4 )·(Cu 0.5 □ 0.5 )Cl, was found in the Yadovitaya fumarole of the Second scoria cone of the Great Fissure Tolbachik eruption, Kamchatka Peninsula, Russia. Aleutite occurs...
FIGURES | View All (4)
Journal Article
Published: 31 May 2019
Mineralogical Magazine (2019) 83 (6): 879–886.
...Igor V. Pekov; Inna S. Lykova; Atali A. Agakhanov; Dmitry I. Belakovskiy; Marina F. Vigasina; Sergey N. Britvin; Anna G. Turchkova; Evgeny G. Sidorov; Katharina S. Scheidl Abstract The new mineral zubkovaite, Ca 3 Cu 3 (AsO 4 ) 4 , was found in the Arsenatnaya fumarole at the Second scoria cone...
FIGURES | View All (9)
Journal Article
Journal: GSA Bulletin
Published: 15 April 2019
GSA Bulletin (2019) 131 (9-10): 1537–1554.
... wall-rock clasts (Episode 1) and dominantly scoria (Episode 2; VEI-3) across >65 km 2 southeast of the summit. Dense 12 cm blocks of Episode 1 fell 8–10 km from the summit vent, and 2–4 cm lithic lapilli reached the coastline, 17 km from the vent. The Episode 2 deposit is chemically zoned...
FIGURES | View All (17)
Series: GSA Special Papers
Published: 07 February 2019
DOI: 10.1130/2018.2538(11)
EISBN: 9780813795386
... ABSTRACT Two small scoria vents were discovered in the Koa‘e fault system, an extensional regime connecting the east and southwest rift zones of Kīlauea that was previously considered to be noneruptive. The chemical composition of the scoria suggests an early to middle nineteenth-century age...
FIGURES | View All (18)
Journal Article
Journal: Economic Geology
Published: 01 February 2019
Economic Geology (2019) 114 (1): 35–46.
... vesicles in the massive ores and the magnetite scoriae, previously interpreted as compelling evidence of volcanic structures, are demonstrated to be the residual pore spaces formed after interstitial phases between magnetite grains were removed by postmagmatic hydrothermal fluids and the accumulated debris...
FIGURES | View All (9)
Journal Article
Published: 01 December 2018
Mineralogical Magazine (2018) 82 (6): 1243–1251.
...Andrey P. Shablinskii; Stanislav K. Filatov; Lidyua P. Vergasova; Eugeniya Yu. Avdontseva; Svetlana V. Moskaleva ABSTRACT The new mineral wrightite, K 2 Al 2 O(AsO 4 ) 2 , was found in 1983 at a fumarole on the Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano...
FIGURES | View All (4)