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Motuca Formation

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Published: 01 January 2018
DOI: 10.1144/SP472.14
EISBN: 9781786204127
... Table 1. Plant fossils of the Pedra de Fogo and Motuca formations Taxon Higher taxonomic rank Geological unit Parnaíba Basin localities and reporting authors Other records of the genus Cyclostigma brasiliensis Lycophyta Pedra de Fogo Carolina ( Iannuzzi & Scherer 2001...
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Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.265.01.03
EISBN: 9781862395138
... in different lithofacies of a cyclic alluvial succession (Pedra de Fogo/Motuca formations, Parnaíba Basin). The outstanding three-dimensional preservation of particularly large fossil remains, made possible by siliceous permineralization, provides the opportunity to study the gross morphology, anatomy...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1964
AAPG Bulletin (1964) 48 (9): 1475–1512.
.... An unconformity without pronounced angularity exists within the cycle between the Permian Motuca Formation and the overlying Triassic Pastos Bons and Sambaíba Formations, a gap which includes much of Early Triassic time. 5. Facies .—The Permo-Pennsylvanian clastics show the same southeastward coarsening...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1974
AAPG Bulletin (1974) 58 (2): 208–215.
... ; Ward et al. , 1969 ; Langenheim, 1960 ), the Motuca Formation ( Creer, 1970 ; Mendes and Petri, 1971 ), and the Paganzo redbeds and Salta-Jujuy beds ( Creer, 1970 ). Similarly, the dolerite dikes of Suriname, dated at 227 m.y., fall on the Permian side of the Permo-Triassic boundary ( Veldkamp et...
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Published: 01 January 2018
DOI: 10.1144/SP472.16
EISBN: 9781786204127
..., the size (i.e. length) of the zircon grains is between 300 and 100 µm, while the axial (length:width) ratios are mainly 1:1–3:1. Exceptions include some 100 µm-long needle-like zircons in the fine-grained sandstones of the Pimenteira, Longá and Motuca formations. Euhedral forms are rare, although...
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Journal Article
Journal: GSA Bulletin
Published: 02 January 2018
GSA Bulletin (2018) 130 (7-8): 1099–1120.
.... The vertical compaction of clastic dikes indicates their formation prior to sediment lithification, and dike formation is generally confined to stratigraphic intervals with heterolithic beds of varying density and viscosity, i.e., interbedded sandstone and siltstone. These seismogenic features are generally...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 18 May 2017
Lithosphere (2017) 9 (4): 595–608.
.... 419 – 423 , doi:10.18520/cs/v110/i3/419-423. Kauffmann , M. , Jasper , A. , Uhl , D. , Meneghini , J. , Osterkamp , I.C. , Zvirtes , G. , and Pires , E.F. , 2016 , Evidence for palaeo-wildfire in the Late Permian palaeotropics—Charcoal from the Motuca Formation...
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Published: 01 January 2018
DOI: 10.1144/SP472.10
EISBN: 9781786204127
... in the Early Cretaceous ( c . 130 Ma: Sardinha Formation), which produced a huge variety of igneous bodies (sills and dykes) that intrude the pre-Silurian graben up to the sedimentary deposits of the Triassic Motuca Formation. Igneous intrusions are identified in the well log data due to their conspicuous...
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Published: 01 January 2018
DOI: 10.1144/SP472.12
EISBN: 9781786204127
... plate tectonic reconstructions in this study to detect Permian–Triassic climate change in the intracratonic Parnaíba Basin. The succession in the Parnaíba Basin sensu stricto is completed by the Late Permian–Early Triassic Motuca Formation. This formation consists of red mudstones, sandstones...
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Published: 01 January 2018
DOI: 10.1144/SP472.18
EISBN: 9781786204127
... ). Fourth, the Balsas Group rocks also show local unconformities, but only towards the top of the group ( Fig. 5 ). The two lower formations, Piaui and Pedra de Fogo, are laterally continuous and in constant contact with each other. However, the Sambaiba Formation overlaps the Motuca Formation in the SE...
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Series: SEPM Concepts in Sedimentology and Paleontology
Published: 01 January 2013
DOI: 10.2110/sepmcsp.11.126
EISBN: 9781565762893
..., 1994, cited the Pedra de Fogo Formation of Eopermian age) cited the Parnaíba Basin Piauí and Motuca Formations (E35: 5°S, 45° W). Silva (1988) cited the Fonte Boa Formation from the Solimões Basin. Feijó (1994b) cited the Early Permian Pedra de Fogo Formation from the Barreirinhas Basin (E36: 2°S, 43°W...
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Series: AAPG Memoir
Published: 01 January 2015
DOI: 10.1306/13531946M1083649
EISBN: 9781629812724
..., the Piaui Formation consists of sandstone, brown shale, and several limestone units, which pass upward into rhythmites with alternating oolitic limestone and anhydrite of the Pedra de Fogo Formation. Above this, brown siltstone, sandstone, and anhydrite compose the Motuca Formation. Finally, aeolian...
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Published: 01 January 2018
DOI: 10.1144/SP472.20
EISBN: 9781786204127
... the macrofossil assemblage, they conclude that the Early Permian Pedra de Fogo and Motuca formations are largely, and possibly entirely, of terrestrial facies, but were deposited in wetter conditions than typically predicted for this region. They also conclude that a high degree of endemism in the Permian flora...
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Published: 01 January 2018
DOI: 10.1144/SP472.2
EISBN: 9781786204127
... ; Paula-Santos et al . 2015 ; Kuchenbecker et al . 2016 ). Uncoloured formations are not lithostratigraphically constrained by well data. The lithostratigraphy formations are: ITP, Itapecuru; COD, Codó; COR, Corda; GRA, Grajaú; SAR, Sardinha; PSB, Pastos Bons; MOS, Mosquito; SAM, Sambaíba; MOT, Motuca...
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Published: 01 January 2018
DOI: 10.1144/SP472.11
EISBN: 9781786204127
... 2 and LTiO 2 suites, respectively. Fig. 5. Stratigraphic column of the Parnaíba Basin with the location of the samples dated by Ar–Ar geochronology and lithogeochemical analyses. Lithostratigraphic units (formations) of the Parnaíba Basin: Jbr, Jaibaras; Ipu, Ipu; Tia, Tianguá; Jai...
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