Regional subsurface stratigraphy, structure, and correlation of middle and early Upper Cretaceous rocks in Alabama, Georgia, and north Florida

10.3133/oc26 ◽  
1947 ◽  
Keyword(s):  
1972 ◽  
Vol 12 (1) ◽  
pp. 138 ◽  
Author(s):  
T. R. Haskell

A thick sequence of uppermost Jurassic, Cretaceous and basal Tertiary non-marine sedimentary rocks underlies the Gippsland area of Victoria. The older part of this sequence is extensively exposed in the west of the Gippsland area, but elsewhere it is known dominantly from well intersections. Although several hiates are recognised, palynological data indicate that a comparatively complete Cretaceous section can be compiled from this sequence in the Gippsland area.The uppermost Jurassic to Paleocene rocks can be divided into three units. The oldest unit is uppermost Jurassic and Lower Cretaceous in age. It consists of variably compacted greywackes and lithic sandstones, minor arkoses and interbedded siltstones and mudstones. The overlying early Upper Cretaceous and Paleocene units are distinguishable paleontologically and consist of quartzose sandstones, carbonaceous siltstones and mudstones.There is no indication of marine influence on sedimentation present in the microfossil content of any of the palynotogical preparations from samples taken throughout most of the sequence. Several species of microplankton are common in the oldest unit, but they are indicative of the lacustrine conditions under which the unit was deposited.Minor hydrocarbon shows have been recorded from the oldest unit, but the sandstones are characteristically tight. More significant shows have been reported from the two younger units that contain relatively clean sandstones interbedded with siltstones and mudstones. These units possess the greatest economic potential of all of the pre-Eocene rocks of the Gippsland Basin.The structural framework of the region is composed of separate series of north-easterly and easterly trending faults or monoclines and a south-easterly regional dip. Differential movements of blocks defined by this fault-monocline pattern appears to have resulted in erosion of the more prospective early Upper Cretaceous and Paleocene strata from all but two subrectangular areas respectively immediately north and south of Seaspray.


Zootaxa ◽  
2020 ◽  
Vol 4881 (3) ◽  
pp. 593-596
Author(s):  
DMITRY E. SHCHERBAKOV ◽  
JOWITA DROHOJOWSKA ◽  
JACEK SZWEDO

The Bernaeinae, currently regarded as a subfamily of Aleyrodidae (Szwedo & Drohojowska 2016, Drohojowska et al. 2019), is the only extinct subfamily of whiteflies with a fossil record from the Callovian (late Middle Jurassic) to Cenomanian (early Upper Cretaceous). Currently, it comprises seven species in six genera (Schlee 1970, Shcherbakov 2000, Drohojowska et al. 2019, Chen et al. 2020)—Bernaea neocomica Schlee, 1970; Burmoselis evelynae Shcherbakov, 2000; Heidea cretacica Schlee, 1970 (see comment below); Juleyrodes Shcherbakov, 2000 (J. gilli Shcherbakov, 2000, J. visnyai Shcherbakov, 2000), Paraburmoselis kachinensis Chen, Zhang, Wang et Zheng, 2020 and Sinicoselis weberi Drohojowska, Wegierek, Evans et Huang, 2019. Heidea by mistake was figured in Drohojowska & Szwedo (2011a, p. 192, Fig. 23) in Aleyrodinae, but no taxonomic decisions were taken regarding this fossil. Later, in the checklist of fossil Aleyrodidae, Szwedo & Drohojowska (2016: supplement p. 6), listed Heidea in Bernaeinae. This statement was not noted by Chen et al. (2020) listing again Heidea in Aleyrodinae referring to erroneous placement on the figure in Drohojowska & Szwedo (2011a).


2003 ◽  
Vol 77 (3) ◽  
pp. 536-558
Author(s):  
Olivier Rieppel ◽  
Hussam Zaher ◽  
Eitan Tchernov ◽  
Michael J. Polcyn

The fossil snake species Haasiophis terrasanctus Tchernov, Rieppel, Zaher, Polcyn, and Jacobs, 2000, from the early Upper Cretaceous of the Middle East, is described and illustrated, following a review of the current debate on snake relationships and origins. The description and discussion presented here adds important detail to the knowledge of this taxon and its phylogenetic significance beyond the limited account presented in the original description of Haasiophis. The species is remarkable in that it shows the skull of a relatively advanced (i.e., macrostomatan) snake, yet preserves well-developed hind limbs. The hind limb includes a femur, tibia, fibula, astragalus, calcaneum, distal tarsal four, and remains of four metatarsals and two phalanges. Haasiophis cannot be considered a juvenile specimen of Pachyrhachis. The implications of the presence of well-developed hind limbs in Haasiophis, Pachyrhachis, and Podophis for the cladistic analysis of the phylogenetic interrelationships of these fossil snakes is discussed. The presence of well-developed hind limbs in Pachyrhachis and Haasiophis also creates methodological problems for the cladistic analysis of the phylogenetic relationships of these fossil snakes. Scenarios of snake origins are reviewed and found to be deficient in the absence of a well-corroborated hypothesis of snake relationships within Squamata.


1970 ◽  
Vol 7 (1) ◽  
pp. 145-155 ◽  
Author(s):  
Lewis H. King ◽  
B. MacLean ◽  
Grant A. Bartlett ◽  
J. A. Jeletzky ◽  
William S. Hopkins Jr.

Samples of Cretaceous sediment have been dredged from the Scotian Shelf at a locality 100 km north-northwest of Sable Island.Continuous seismic-reflection profiles across the sample area show the presence of well defined stratification within the bedrock. These beds are truncated by the slopes of submarine valleys which transect the area. Bedrock appears to outcrop along the upper portion of the valley walls or be covered by a layer of unconsolidated material so thin as to be beyond the resolution of the seismic equipment. The dredged material appears to have come from rubble heaps near the base of the valley slopes and is believed to have originated locally.Approximately 450 kg of sedimentary rock were recovered consisting principally of sideritic quartz sandstone and arenaceous sideritic carbonate, both with fossiliferous material. Glauconite is a significant constituent of many samples.The macrofauna include sufficiently diagnostic forms to suggest correlation with the early Upper Cretaceous (Cenomanian) though the possible presence of older or younger forms cannot be wholly excluded. The microflora and microfauna appear to correlate mainly with the Albian-Aptian, and Albian-Cenomanian, respectively.Cretaceous strata immediately underlie much of the central and eastern portions of the Scotian Shelf. Tertiary sediments reported by Marlowe and Bartlett overlie the Cretaceous toward the continental margin and appear to occur as a discontinuous veneer at other localities on the shelf.


1975 ◽  
Vol 12 (10) ◽  
pp. 1805-1807 ◽  
Author(s):  
John E. Storer

Columbosauripus ungulatus Sternberg is identified from the Dunvegan Formation, Cenomanian (early Upper Cretaceous) of East Pine, northeastern British Columbia. The species was originally reported from the Gething Formation, Albian (late Lower Cretaceous) of Peace River canyon, British Columbia.


Island Arc ◽  
2000 ◽  
Vol 9 (4) ◽  
pp. 611-626 ◽  
Author(s):  
Shigeyuki Suzuki ◽  
Shizuo Takemura ◽  
Graciano P. Yumul ◽  
Sevillo D. David ◽  
Daniel K. Asiedu

10.1029/ft172 ◽  
1989 ◽  
Author(s):  
W. Burleigh Harris ◽  
Vernon J. Hurst ◽  
Paul G. Nystrom ◽  
Lauck W. Ward ◽  
Charles W. Hoffman ◽  
...  

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