 | | Journal (article/letter/editorial) | | Beacon Sandstone Iormation of South Victoria Land, Antarctica, have beenexamined petrographically. Gould, geologist...6EOR9E V LAND EAST OF Frc. 1. Sketch map of Antarctica. (1) Terra Nova Bay district; (2) Ferrar Glacier...Microperthite Plagioc'lase Muscovite Biotite Chlorite Glauconite (?) Apatite Zircon Tourmaline Garnet Diopside...rounded in outline. Microperthite, hornblende, glauconite (?), pyrite, and natrolite are present. Rutile...casespoorly cemented.Microperthite, hornblende, glauconite (?), pyrite, and natrolite are absent in these |  | Amarasinghe, Udeni, Chaudhuri, Asru, Collins, Alan S., Deb, Gautam, Patranabis-Deb, Sarbani (2015) Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India. Geoscience Frontiers, 6 (3) 453-463 doi:10.1016/j.gsf.2014.03.009 | Journal (article/letter/editorial) | | the Krishna Province and Enderby Land in East Antarctica. The similarity in the maximum depositional age...age with previously published authigenic glauconite ages suggest that the origin of the Pranhita-Godvari...southerly source from the Eastern Ghats Orogen and Antarctica. Later cycles of deposition include the overlying...al., 2008; Gregory et al., 2009) and 40Ar-39Ar glauconite studies (Conrad et al., 2011) have shown that...2011), which is consistent with the provisional glauconite age. 2.1. Cycle I 2.3. Cycle III The Cycle |  | | Journal (article/letter/editorial) | | Stoll Keywords: Eocene–Oligocene transition Antarctica glaciation IRD provenance a b s t r a c t Marine...margin of the South Orkney microcontinent in Antarctica (Ocean Drilling Program Leg 113 Site 696) were...Mountains of West Antarctica to the coastal region of Dronning Maud Land in East Antarctica. This study provides...Introduction The period leading up to the glaciation of Antarctica remains poorly understood. Whilst there is a...that the onset of continent-wide glaciation in Antarctica occurred around the Eocene–Oligocene Transition |  | | Journal (article/letter/editorial) | | 674–686, 2020 New insights into the nature of glauconite Adrián López-Quirós1,*, Antonio Sánchez-Navas1...of Granada, 18071 Granada, Spain 1 Abstract Glauconite must be assessed as mica-rich mica-smectite R3...sediments that indicate that: (1) It consists of a glauconite-smectite (R3 ordered) mixed-layer silicate, composed...(smectite layers) content in the interstratified glauconite-smectite. (3) Potassium is stabilized at the...octahedrally coordinated Fe2+. (4) Microtexture of the glauconite crystals are comparable with those of other micas |  | | Report (issue) | | Early geological exploration of Seymour Island, Antarctica 4 ..... William J. Zinsmeister Topographic...Cretaceous/Tertiary transition on Seymour Island, Antarctica ................0405. Rosemary A. Askin Upper...Formation (Upper Cretaceous), Seymour Island, Antarctica Dale M. Tshudy and Rodney M. Feldmann ........Wiedman A new genus of polydolopid marsupial from Antarctica ....... 0... Judd A. Case, Michael O. Woodburne...environment of the La Meseta Formation (Eocene) of Antarctica ......... 0c ccc ccc ccc nec ceee cues Lawrence |  | | Report (chapter) | | passive continental margin, Wilkes Land, East Antarctica SANDRA PASSCHIER*, DANIEL J. CIARLETTA, VICTOR...sediment record from the Wilkes Land margin of Antarctica. We present sequence stratigraphic models based...Wilkes Land continental margin in Antarctica. This part of East Antarctica has developed a passive margin...shelf. Following the break-up of Australia and Antarctica at c. 83 Ma, a thin Eocene and older synrift...assessed remotely due to the presence of the East Antarctica Ice Sheet, the nearby Transantarctic Mountains |  | | Journal (article/letter/editorial) | | calcareous intervals (Jenkins et al., 1982). Glauconite is conspicuous giving the outcrop a greenish...be absent elsewhere. Glauconite and clinoptilolite are ubiquitous with glauconite conspicuous in the Tuketja...smectite, opal-CT and clinoptilolite, as well as glauconite in some samples 52 (Pomerol and Aubrey, 1977)... Hallam and Sellwood (1968) pointed out that glauconite first attains major importance in Great Britain...siliceous sponge spicules or their moulds and glauconite (Gosling 1929; Newton, 1937; Humphries, 1956 |  | | Book | | . . . Dating of Detrital Sedimentary Rocks. Glauconite. . . . . . . . . Nonmarine Carbonate Rocks. Summary...Victoria Land, Antarctica Lake Bonney, Taylor Valley, 0.7136 Southern Victoria Land, Antarctica Lake George...of Tasmania and those of the Ferrar group of Antarctica. Dunites and Peridotites = 76) will be discussed...similar data for the Jurassic Ferrar dolerite of Antarctica, which can be traced laterally for more than...versus the SiCs content in some basaltic rocks of Antarctica. The positive correlation suggests that the parent |  | | Journal (article/letter/editorial) | | continental crust, that moved southward with Antarctica from Tasmania in the Late Cretaceous. All have...the Tasman Fracture Zone that extends south to Antarctica. The scarp is up to 2000 m high in places and...the mid- to Late Cretaceous, as Australia and Antarctica started to move apart. Subsequent strike-slip...of Tasman Fracture Zone between Australia and Antarctica South Tasman Rise East Tasman Plateau RV L'Atalante...suggested that breakup between Australia and Antarctica started in the Cenomanian (95 Ma), and Veevers |  | | Journal (article/letter/editorial) | | associated with changes in continental weathering on Antarctica. Nonradiogenic e Nd values at Site 689 during...boundary when large-scale ice sheets developed on Antarctica, Southern Ocean sourced water masses, such as...reflect continental weathering conditions on Antarctica, was determined by Ehrmann and Mackensen [7]...likely to reflect the growth of ice sheets on Antarctica. However, it is difficult to estimate the e Nd...entering the Southern Ocean from weathering on Antarctica has an e Nd value that is less radiogenic than |  | | Journal (article/letter/editorial) | | sea-floor spreading anomalies between Australia and Antarctica Carpenter, M.A., see Freer, R. et al. Channell...the reliability of the Rb-Sr dates for selected glauconite morphologies of the Upper Cretaceous (Navesink...of the reliability of Rb-Sr dates for selected glauconite morphologies of the Upper Cretaceous (Navesink...of the reliability of Rb-Sr dates for selected glauconite morphologies of the Upper Cretaceous (Navesink |  | | Journal (article/letter/editorial) | | <&> Spirocolpus "Turritella" clays G G G 5- Glauconite 79 it has been identified from four sets of...South Atlantic: Sites 516, 522,523 Weddell Sea, Antarctica: mainly Hole 689B GPTS (Anomalies: Canda & Kent...polarity record at ODP Site 689 in the Weddell Sea, Antarctica. The biostratigraphy of Site 689 is based on...(Figure 4A). Thus at both Sites 689 and 690 (near Antarctica), and at ODP Site 748 on the Kerguelen Plateau...35 Ma. This is also consistent with the K-Ar glauconite dates of the H. alabamensis primitiva interval |  | | Journal (article/letter/editorial) | | Sandstone is Middle Eocene and contains minor glauconite, algae, bryozoans, foraminifers and bivalves...Basin, the unit near Zanthus contains very little glauconite but more abundant fossils. It probably accumulated...presence of scattered to abundant dark green glauconite pellets. The base of the spicule-bearing sandy...and illite with minor kaolinite and chlorite. Glauconite pellets, where present, consist of well-ordered...released large quantities of silica. The presence of glauconite and pyrite in the Princess Royal Spongolite indicates |  | | Journal (article/letter/editorial) | | (4),2r 123-135 (1896)' ON THE MINERALOGY OF ANTARCTICA DuNc.qN SrnwAnt, Jr.., Corleton College,Northf'eld...Christensen(Christensen-Vulkan)of Robert' son Island, West Antarctica. The following is a list of the 167 mineral species'subspecies...questionable occurrence, that have been reported from Antarctica. A number of these have been determined only...Fayalite Ferrimolybdite Fluorite Forsterite Galena Glauconite Glaucophane Gold Graphite Grossularite Gypsum...petrography. II. Rocks from Ingrid Christensens Land, Antarctica. Sci. Res. Norwegian Antarctic Exped'. 1927-1928 |  | | Journal (article/letter/editorial) | | successfully in his discovery of the frontal zones in Antarctica. Ultimately, an over-all geochemical study of...of the 'Pacific Ocean, from the Bering Sea to Antarctica. Critical studies of the analytical methods...amorphous silicic acid in surficial waters of Antarctica is as high as 2 Ag-atoms Si/liter; by our determinations...exerted probably by the formation of authigenic glauconite or phillipsite, the presence of which, in oceanic...precipitation of phosphates and the formation of glauconite, but is actually impeding the chemogenic precipitation |  | | Report (chapter) | | of contourite sedimentation: (1) deposition of glauconite-rich sandy contourites in exposed areas of the... moderately sorted, 60% biogenic component), glauconite-rich sands (bioturbated fine to very fine sand...which overlie glauconite-rich sands, interbedded with muds and sandy muds. The glauconite-rich sands contain...sediments as sandy contourites. Glauconite-rich sands. The glauconite-rich sands are greenishblack in...lamination, with thin horizons of dropstones. The glauconite is very wellrounded and may be produced partly |  | | Journal (article/letter/editorial) | | are filled with glauconite, the content of which increases upward; 5. ~40 cm glauconite layer with white...layer of probably Oligocene (Racki et al. 2011) glauconite sand with gravel. MATERIAL AND METHODS Sample...the rest of sediments from the profile (opoka, glauconite-rich layer, marly-rich layers; Fig. 6). The main...example from the P-Tr boundary at Graphite Peak in Antarctica as well as from the endPermian bed in Meishan...orange gray, decalcified opoka with and without glauconite = green, undecalcified opoka = yellow. (Color |  | Witts, James D., Newton, Robert J., Mills, Benjamin J.W., Wignall, Paul B., Bottrell, Simon H., Hall, Joanna L.O., Francis, Jane E., Alistair Crame, J. (2018) The impact of the Cretaceous–Paleogene (K–Pg) mass extinction event on the global sulfur cycle: Evidence from Seymour Island, Antarctica. Geochimica et Cosmochimica Acta, 230. 17-45 doi:10.1016/j.gca.2018.02.037 | Journal (article/letter/editorial) | | global sulfur cycle: Evidence from Seymour Island, Antarctica James D. Witts, Robert J. Newton, Benjamin J...global sulfur cycle: Evidence from Seymour Island, Antarctica, Geochimica et Cosmochimica Acta (2018), doi:...global sulfur cycle: Evidence from Seymour Island, Antarctica James D. Witts1,a*, Robert J. Newton1, Benjamin...(69–65.5 Ma) succession located on Seymour Island, Antarctica. These data represent the highest resolution...Cretaceous–Paleogene section located in the James Ross Basin, Antarctica. The overall aim is to examine sulfur cycle changes |  | John, Cédric M., Karner, Garry D., Browning, Emily, Leckie, R. Mark, Mateo, Zenon, Carson, Brooke, Lowery, Chris (2011) Timing and magnitude of Miocene eustasy derived from the mixed siliciclastic-carbonate stratigraphic record of the northeastern Australian margin. Earth and Planetary Science Letters, 304 (3) 455-467 doi:10.1016/j.epsl.2011.02.013 | Journal (article/letter/editorial) | | which reflects increased ice volume primarily on Antarctica. Our backstripping estimates suggest that sea-level...Shell fragments Bryozoans Quartz grains >63µm Glauconite grains >63µm C.M. John et al. / Earth and Planetary...fragments, and a slight increase in the background glauconite level. reflectors marking the onset of strong...in sequence sets MSB2 and MSB3 correspond to glauconite-rich intervals observed within cores of the periplatform...glauconitic layers (named Gl-1) at sites 1194 and 1195. Glauconite layer Gl-1 can also be seen at the base of the |  | Sarkar, A., Sarangi, S., Ebihara, M., Bhattacharya, S.K., Ray, A.K. (2003) Carbonate geochemistry across the Eocene/Oligocene boundary of Kutch, western India: implications to oceanic O2-poor condition and foraminiferal extinction. Chemical Geology, 201 (3) 281-293 doi:10.1016/s0009-2541(03)00238-9 | Journal (article/letter/editorial) | | the samples of early Oligocene contain green glauconite grains and pyrites. Glauconites are pellet shaped...Wagapadhar have less than 300 ppm Fig. 2. Authigenic glauconite infilling of foraminiferal calcites of boundary...the boundary coinciding with y18O cooling and glauconite-rich horizon. Arrows indicate the EOB. A. Sarkar...samples contain significant amount of in situ glauconite grains as infilling of foraminiferal chambers...pyrites, although some contribution may come from glauconite grains as well [glauconites contain about f 25% |  | | Journal (article/letter/editorial) | | Swedish Expedition. Figure 1 is a sketch map of Antarctica showing the location of the South Orkney Islands...AMERIEA fi9 i *=\ "\\ Frc. 1. Sketch map of Antarctica showing locations where specimens were collected'...Concretions of harder sandstone,more or lessrich in glauconite, occur in the beds. The Snow Hill seriesis stratigraphically...erratic, four of which contain over one per cent glauconite, nine being arenaceous; six sandstones, three...three of which contain over one per cent glauconite; an arenaceous shale erratic; one diorite; an olivine |  | Proust, Jean-Noël, Pouderoux, Hugo, Ando, Hisao, Hesselbo, Stephen P., Hodgson, David M., Lofi, Johanna, Rabineau, Marina, Sugarman, Peter J. (2018) Facies architecture of Miocene subaqueous clinothems of the New Jersey passive margin: Results from IODP-ICDP Expedition 313. Geosphere, 14. 1564-1591 doi:10.1130/ges01545.1 | Journal (article/letter/editorial) | | frequent cycles of dysoxia. In situ and reworked glauconite is a common component of topset and bottomset...clay clasts, and, in places, a muddy matrix. Glauconite content can decrease upsection from 80%–90% (lithofacies...clay-lined horizontal and vertical burrows filled by glauconite (up to 87 cm below erosion surfaces). The gravel...Sand(stone) Silt(stone) Research Paper Clay(stone) Glauconite sand(stone) 400 X X X X p p X X p X wd...affected in depth to the top of each section. Gl—glauconite, Qz—quartz. Downloaded from https://pubs.geoscienceworld |  | MacLeod, K.G., White, L.T., Wainman, C.C., Martinez, M., Jones, M.M., Batenburg, S.J., Riquier, L., Haynes, S.J., Watkins, D.K., Bogus, K.A., Brumsack, H.-J., do Monte Guerra, R., Edgar, K.M., Edvardsen, T., Harry, D.L., Hasegawa, T., Hobbs, R.W., Huber, B.T., Jiang, T., Kuroda, J., Lee, E.Y., Li, Y.-X., Maritati, A., O'Connor, L.K., Petrizzo, M.R., Quan, T.M., Richter, C., Tejada, M.L.G., Tagliaro, G., Wolfgring, E., Xu, Z. (2020) Late Cretaceous stratigraphy and paleoceanographic evolution in the Great Australian Bight Basin based on results from IODP Site U1512. Gondwana Research, 83. 80-95 doi:10.1016/j.gr.2020.01.009 | Journal (article/letter/editorial) | | rift system that developed between Australia and Antarctica with an open-ocean connection to the west and...understanding of the deep-water frontier region between Antarctica and Australia. Introduction During the Late...Cretaceous, the slow separation of Australia and Antarctica led to the development of the Southern Rift System...history Mesozoic rifting between Australia and Antarctica led to the development of a network of rift basins...seaway between parts of southern Australia and Antarctica (Totterdell et -p al., 2000; Norvick and Smith |  | | Journal (article/letter/editorial) | | as a questionable species. The mineral, from Antarctica, had been described by Matsubara & Motoyoshi...(1985) clearly fully described the mineral from Antarctica twelve years earlier. How- 1338 THE CANADIAN...2K0.8(Al1.33Fe2+0.67)[Al0.13Si3.87]O10(OH)2 “glauconite–illite” + 2.72CaMg(CO3)2 = dolomite KCa2(Mg2...or field studies examining the metamorphism of glauconite beyond low-grade conversion to mica. Potassicpargasite-forming...but involving illite or muscovite rather than glauconite or biotite, can be envisioned. However, Shimazaki |  | | Report (chapter) | | margin sedimentary sequence: the Larsen Basin, Antarctica DUNCAN PIRRIE British Antarctic Survey, Natural...the petrographic evolution of the Larsen Basin, Antarctica and to discuss the controls on the petrographic...muscovite, hornblende, pyroxene, opaque minerals and glauconite, along with less common titanite, zircon, garnet...to 245 more mafic volcanism within the arc. Glauconite grains, some of which show relict igneous textures... 1985. Cape Marsh Geology, Robertson Island, Antarctica. Contribucion del Instituto Antartico Argentino |
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