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Shuram Formation

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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 April 2014
GeoArabia (2014) 19 (2): 17-48.
...) the Upper Nafun Supersequence (582–547 Ma) consisting of the Shuram Formation (clastics and carbonates) and the Buah Formation (carbonates). The Nafun Group lies below the Ediacaran– lower Cambrian Ara Group (evaporites and carbonates), which contains the Ediacaran/Cambrian Boundary currently dated at 541...
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Journal Article
Journal: Geosphere
Published: 14 August 2018
Geosphere (2018) 14 (5): 2245-2276.
..., the Shuram negative carbon isotopic excursion occurs within the Rainstorm Member near the top of the Johnnie Formation, followed by a remarkable valley incision event. At its type locality in the northwest Spring Mountains, Nevada, the Johnnie lithostratigraphy consists of three distinctive sand-rich...
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Journal Article
Journal: Geology
Published: 01 October 2017
Geology (2017) 45 (10): e429.
Journal Article
Journal: Geology
Published: 01 October 2017
Geology (2017) 45 (10): e430.
Journal Article
Journal: Geology
Published: 01 June 2017
Geology (2017) 45 (6): 567-570.
... that a smaller DOC pool and a smaller oxidant budget are required. Any subsequent proposed mechanism for the Shuram Excursion should be able to explain a globally synchronous ∼8 m.y. excursion. We thank Phil Schmidt for collaboration in sampling the Wonoka Formation, and Julie Loisel for help in the field...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2011
GSA Bulletin (2011) 123 (7-8): 1539-1559.
... in profiles through the Wonoka Formation in South Australia (which lies above the basal Ediacaran global stratotype section and point) and the Shuram-Buah interval in Oman, confirming temporal correlation and suggesting genesis through changes in the isotopic composition of the global ocean. The Shuram...
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Series: Geological Society, London, Special Publications
Published: 01 January 2012
DOI: 10.1144/SP366.10
EISBN: 9781862396142
... of the Ghadir Manqil Formation (Cryogenian Abu Mahara Group), the Masirah Bay, Shuram and Buah formations of the Ediacaran Nafun Group, and the A3 (latest Ediacaran) and A6 (Early Cambrian) cycles of the Ara Group. Despite the extensive recovery of leiosphaerid acritarchs from the Shuram Formation...
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Journal Article
Journal: Geology
Published: 01 November 2008
Geology (2008) 36 (11): 863-866.
...Thomas F. Bristow; Martin J. Kennedy Abstract A possible global drop in marine carbon isotope values to as low as −12‰ Peedee belemnite (PDB), recorded in the Ediacaran Shuram Formation of Oman, has been attributed to the non-steady-state oxidation of oceanic dissolved organic carbon (DOC...
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Journal Article
Journal: Geology
Published: 24 January 2018
Geology (2018) 46 (3): 267-270.
... , S. , Zhou , C. , and Liu , X.M. , 2017 , Was the Ediacaran Shuram Excursion a globally synchronized early diagenetic event? Insights from methane-derived authigenic carbonates in the uppermost Doushantuo Formation, South China : Chemical Geology , v. 450 , p. 59 – 80 , https...
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Journal Article
Journal: Geology
Published: 01 December 2015
Geology (2015) 43 (12): 1103-1106.
... , Chemostratigraphic and sedimentological framework of the largest negative carbon isotopic excursion in Earth history: The Neoproterozoic Shuram Formation (Nafun Group, Oman) : Precambrian Research , v. 146 , p. 68 – 92 , doi:10.1016/j.precamres.2006.01.007. Lee C. Fike D.A. Love G.D. Sessions...
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Journal Article
Published: 01 March 2008
Geological Magazine (2008) 145 (2): 161-172.
... ( Halverson et al. 2005 ), that is, of the Ediacaran (Vendian) period (635–542 Ma), and have documented the global deposition of carbonate formations depleted in 13 C below −8 ‰ ( Le Guerroué et al. 2006 ; Fike et al. 2006 ). This has been termed the Shuram ( Le Guerroué et al. 2006 ) or Wonoka...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 2014
AAPG Bulletin (2014) 98 (8): 1631-1667.
... because of a combination of ramp morphology, siliciclastic supply, and possible syndepositional faulting. The lithostratigraphic boundary between the Khufai Formation and the overlying Shuram Formation is gradational and represents significant flooding of the carbonate platform. The stratigraphic...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 January 2012
GeoArabia (2012) 17 (1): 49-98.
..., it conformably overlies the Buah Formation. However, at some localities on what were probably fault-bounded palaeo-topographic highs, the Sirab Formation rests unconformably on eroded Buah Formation or directly on the even older Shuram Formation. The Sirab Formation is overlain with marked angular unconformity...
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Series: Geological Society, London, Special Publications
Published: 01 January 2012
DOI: 10.1144/SP366.12
EISBN: 9781862396142
... Abstract The paper reviews the age, location and extent of the late Neoproterozoic to Early Cambrian evaporite basins in the Middle East, NW India and Pakistan. The stratigraphic section discussed includes the largest inorganic negative δ 13 C excursion known (in the Shuram Formation); six...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 October 1998
GeoArabia (1998) 3 (4): 493-506.
... in the Haushi has been generated by three different source rocks: ‘Q’, Huqf Group (Shuram Formation) and Haima Group (Safiq Formation). However, oil-typing shows that over 90% of the oil-in-place is derived from the ‘Q’ source rock. This seems to indicate a charge problem for prospects outside the ‘Q’ migration...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1982
AAPG Bulletin (1982) 66 (12): 2609-2627.
... peninsula. Subsurface and outcrop evidence within and outside of Oman suggests that the sediments of the Huqf Group lie within the age span of late Precambrian to Early-Middle Cambrian. The Huqf Group is subdivided into five formations corresponding to an alternation of clastics (Abu Mahara and Shuram...
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Image
In the Miqrat-1 Well, Oman (from  Forbes et al., 2010)  the <b>Shuram</b> δ 13 C A...
in > GeoArabia
Published: 01 April 2014
Figure 3: In the Miqrat-1 Well, Oman (from Forbes et al., 2010) the Shuram δ 13 C Anomaly starts at the excursion from +2.0‰ to -10‰ across the Khufai-Shuram transition, and ends where δ 13 C returns to 0.0‰ in the Buah Formation. Bowring et al. (2007) picked the End Shuram δ 13 C Anomaly
Image
(a) <b>Shuram</b>-Buah boundary in Wadi Aswad (northern Huqf area). Note the reces...
in > GeoArabia
Published: 01 October 2004
Figure 10: (a) Shuram-Buah boundary in Wadi Aswad (northern Huqf area). Note the recessive scree-forming unit that contains the maximum flooding surface of depositional sequence 5. Field of view is approximately 2 km in the north-south direction. (b) Lithologic boundary between the Buah Formation
Image
(a) Field photograph of the lithological boundary between the <b>Shuram</b> and Bu...
in > GeoArabia
Published: 01 October 2004
Figure 8: (a) Field photograph of the lithological boundary between the Shuram and Buah formations in the Wadi Bani Awf measured section. Note the gradual increase of carbonate lithologies as approaching the base of the Buah. (b) Field photograph of megabreccia bed in the Wadi Bani Awf section
Journal Article
Journal: Geology
Published: 01 February 2017
Geology (2017) 45 (2): 115-118.
... to the Shuram excursion—the largest negative δ 13 C excursion in Earth history ( Grotzinger et al., 2011 ). Here, we report the occurrence of silicified glendonites from an interval in the Doushantuo Formation that is characterized by positive δ 13 C values, is constrained between 609 ± 5 Ma and 576 ± 14 Ma...