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Punta Barrosa Formation

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Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.011
EISBN: 9781565762923
... Abstract Abstract Three different outcrops, presented along depositional dip, are featured in this fieldguide from the Punta Barrosa Formation. The outcrops are relatively close to each other and their location is highlighted by the yellow areas on map at left. The Punta Barrosa...
FIGURES
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.013
EISBN: 9781565762923
...Sheets of the Punta Barrosa Formation Figure 1.1. Photomosaic (A) and line-drawing trace (B) of Marina’s Cliff (taken from the east) showing a stacking pattern of thick-bedded sandstone alternating with fine sandstone/shale packets (S units). Sandstone beds have sharp bases with pervasive...
FIGURES
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.015
EISBN: 9781565762923
..., is an easily accessible outcrop of the upper Punta Barrosa Formation. Stratigraphically positioned at the same level as the Marina’s Cliff outcrops (from which it is visible), this outcrop offers good lateral continuity of tabular architecture with few clear examples of scouring and amalgamation. Individual...
FIGURES
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.017
EISBN: 9781565762923
...Sheets of the Punta Barrosa Formation Figure 3.1. (A) Photomosaic of the Headquarters’ Cliff (taken from the east) showing a stacking pattern of thick-bedded sandstone alternating with fine sandstone/shale packets. Sandstone beds have sharp bases with sole marks, particularly in beds from...
FIGURES
Series: AAPG Studies in Geology
Published: 01 January 2008
EISBN: 9781629810331
...Abstract Abstract The outcrops of Marina’s Cliff are part of the Punta Barrosa Formation along the eastern margin of the Andean fold-thrust belt in southernmost chile ( Figure 1 ). This formation was deposited during the first deep-water, coarse-grained clastic depositional stage...
FIGURES | View All (6)
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Figure 3. A: Detrital zircon data from <span class="search-highlight">Punta</span> <span class="search-highlight">Barrosa</span> <span class="search-highlight">Formation</span>. Age histogr...
Published: 01 December 2003
Figure 3. A: Detrital zircon data from Punta Barrosa Formation. Age histograms show total amount of concordant ages for each sample. All ages are 238 U/ 206 Pb. Detrital zircon age data are plotted as histograms with superimposed probability density distribution in Mesozoic ages enlarged
Journal Article
Journal: GSA Bulletin
Published: 01 November 2005
GSA Bulletin (2005) 117 (11-12): 1596–1614.
...Andrea Fildani; Angela M. Hessler Abstract The Mesozoic evolution of the Andean Cordillera of southern Patagonia is recorded in two formations that are now part of the fold-thrust belt: the Zapata Formation and the Punta Barrosa Formation. Extension in the Ultima Esperanza region began in the Late...
FIGURES | View All (14)
Journal Article
Journal: GSA Bulletin
Published: 01 March 2017
GSA Bulletin (2017) 129 (3-4): 349–371.
..., sedimentologic, and facies analyses of the Cenomanian-aged Lago Viedma Formation indicate a protracted phase of a dominantly shoreface and foreshore depositional setting at the northern end of the basin (Austral basin sector), whereas 200 km to the south, age-equivalent strata of the Punta Barrosa Formation...
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.007
EISBN: 9781565762923
... with submarine fan lobes of the Punta Barrosa Formation were deposited in a relatively broad foredeep (i.e., flows not influenced by basin margins; Figs. ii.1B and C ). Subsequent propagation of thrust sheets caused the basin to become narrower and deeper, which is reflected in the development of the deposits...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1982
AAPG Bulletin (1982) 66 (5): 643–644.
... in coarse detrital mica. Slumped intervals are common, and show a northwest-southeast trend of slump fold axes, which parallels the axis of the back-arc basin to the west. The overlying Punta Barrosa Formation of Albian to Cenomanian age was deposited contemporaneously with deformation in the cordillera...
Journal Article
Journal: Geology
Published: 01 December 2003
Geology (2003) 31 (12): 1081–1084.
...Figure 3. A: Detrital zircon data from Punta Barrosa Formation. Age histograms show total amount of concordant ages for each sample. All ages are 238 U/ 206 Pb. Detrital zircon age data are plotted as histograms with superimposed probability density distribution in Mesozoic ages enlarged...
FIGURES
Journal Article
Journal: Clay Minerals
Published: 01 September 2018
Clay Minerals (2018) 53 (3): 351–375.
... Cretaceous sedimentary units that were affected either by low-grade regional metamorphism or by Miocene contact metamorphism. The highest [MnO|SiO 2 ,Al 2 O 3 ,FeO,MgO] values are recorded in the upper Zapata Formation. The Punta Barrosa, Cerro Toro and Tobífera Formations show slightly lower [MnO|SiO 2 ,Al...
FIGURES | View All (12)
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(A) Zapata thrust (cf.  Wilson, 1983 ), developed at the base of the Zapata...
Published: 01 September 2011
and Rio Rincón anticline exposed along the northern flanks of Cerro Tenerife in the Cordillera Arturo Prat. The thrust flat shown here juxtaposes the Upper Cretaceous Punta Barrosa Formation above the underlying Lower Cretaceous Zapata Formation. To the east, this fault cuts up-section and produces tight
Series: GCSSEPM
Published: 01 December 2008
DOI: 10.5724/gcs.08.28.0268
EISBN: 978-0-9836096-2-9
..., the orogeny, and the onset of deep-water sedimentation is recorded by the ~1000 m thick Punta Barrosa Formation (Turonian-Coniacian), characterized by 40-150 cm thick, generally medium-grained, tabular, turbiditic sandstone beds that alternate with abundant shale, sandy slurry flow and debris flow deposits...
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10.005
EISBN: 9781565762923
... of the Torres del Paine magmatic complex ca. 13–12 Ma ( Halpern, 1973 ; Michael, 1983 ) ( Fig. i.4 ) clearly postdates the development of the foliation and tight folding within the Punta Barrosa and Cerro Toro formations (e.g., Skarmeta and Castelli, 1999), and indicates a hiatus of regional deformation during...
FIGURES | View All (4)
Journal Article
Journal: GSA Bulletin
Published: 01 January 1991
GSA Bulletin (1991) 103 (1): 98–111.
...-Cenomanian Punta Barrosa Formation. During Late Cretaceous time, the foreland basin configuration consisted of a narrow foredeep trough bounded by a gently sloping foreland ramp on the craton to the east. This geometry reflects greater flexural subsidence of the stretched and thermally weakened passive back...
Series: SEPM Field Trip Guidebook
Published: 01 January 2009
DOI: 10.2110/sepmfg.10
EISBN: 9781565762923
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Figure 10. Typical <span class="search-highlight">Punta</span> <span class="search-highlight">Barrosa</span> lithofacies. (A) Amalgamated thicker sands...
Published: 01 November 2005
Figure 10. Typical Punta Barrosa lithofacies. (A) Amalgamated thicker sandstone at the type locality. (B) Tightly folded beds. (C) Detail of banding in slurry flow deposits. (D) Packets of slurry beds (lighter) and thin-bedded turbidites (darker) in outcrops of the upper Punta Barrosa Formation.
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TABLE 2. LEAST-SQUARES MIX RESULTS FOR SHALES FROM THE ZAPATA AND <span class="search-highlight">PUNTA</span> BAR...
Published: 01 November 2005
TABLE 2. LEAST-SQUARES MIX RESULTS FOR SHALES FROM THE ZAPATA AND PUNTA BARROSA FORMATIONS
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Figure 12. Fractionation diagram for rare earth elements (REE), comparing Z...
Published: 01 November 2005
Figure 12. Fractionation diagram for rare earth elements (REE), comparing Zapata and Punta Barrosa Formations. Average REE abundances for Punta Barrosa shale and sandstone are distinct from average REE abundances for Zapata shale by one standard deviation (all data are reported in Table C; see