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Topic: Barremian

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	SVPCA 2000 - Field Trip - Dean William Buckland (b. 1784, d. 1856)
		Attempts to use the microscopic remains of fossil pollen and spores have proved partially successful, and some approximate dates have been determined suggesting that the exposed Wessex Formation is entirely Barremian (Hughes and McDougall 1990).
		As none of the Wealden Group is considered to be older than Barremian, an approximate maximum age for the Isle of Wight dinosaur assemblage is approximateley 130 million years b.p.
		On the Isle of Wight only the upper part of the Hauterivian is seen, where, at Hanover Point the so-called Pine raft, an accumulation of fossil tree trunks in a sandstone channel is placed at the Hauterivian-Barremian boundary by Hughes and McDougall (1990).
	www.svpca.org /years/2000_portsmouth/fieldtrip.age.html (752 words)

	Palaeos Mesozoic: Cretaceous: Early Cretaceous I --The Neocomian Epoch
		Finally, the region experienced three periods of rapid sea level increase: (1) early Valanginian to early Hauterivian (this episode may have occurred in two stages), (2) middle Hauterivian, and (3) late Hauterivian to early Barremian.
		During these periods, the carbonate slopes on which coral reefs had developed "drowned." That is, the sea rose and the platforms came to be submerged below the zone optimal for photosynthesis.
		As we might expect, complex, intermediate patterns are observed in France, Jamaica, and Venezuela where rudists established themselves in the Hauterivian or Barremian.
	www.palaeos.com /Mesozoic/Cretaceous/Neocomian.htm (2049 words)

	THE BARREMIAN/APTIAN BOUNDARY IN THE SOUTH CARPATHIANS (ROMANIA) (Site not responding. Last check: 2007-11-03)
		The Upper Barremian is there characterized by the Urgonian facies: reefal limestones, with rich tethyan ammonite assemblages and common occurrence of benthonic foraminifera of the miliolid group.
		The reefal limestones are overlain by a marly dominated sequence, uppermost Barremian in age.
		Barremian to Turonian Carbonate Platform Facies in Northeastern Mexico, their Paleogeographic, Paleoceanic, and Paleoclimatic Implications: Comparison with Coeval Facies Elsewhere in the Tethys (Posters)
	gsa.confex.com /gsa/2003AM/finalprogram/abstract_60718.htm (381 words)

	Jeanne d'Arc basin: Hibernia structure
		During the Barremian, the entire sediment carapace above the Argo salt was displaced to the northeast along a "supra crustal" detachment in response to differential subsidence in the Jeanne d'Arc Basin.
		The previously interpreted Aptian break-up unconformity is therefore a rift-onset unconformity documenting this late Barremian phase of extension.
		Sediment overlying the late Barremian unconformity does not onlap the Hibernia structural high implying that the uplift of the Hibernia structure must have occurred after deposition of these sediments.
	www.ldeo.columbia.edu /karner/descriptions/jeanne.darc.word.html (1630 words)

	DinoWight - The Palaeoecology of the Dinosaurs of the Isle of Wight
		During the Barremian age of the Early Cretaceous, the Isle of Wight was very different to the way it is now.
		Iguanodon and Mantellisaurus would have fed on the leaves of trees, while Hypsilophodon and Valdosaurus would have been restricted to browsing on ferns and cycads, although there is the possibility that they may have eaten plant debris pulled down by Iguanodon.
		The ornithopods were clearly the dominant aspect of the ecology of the Isle of Wight during the Barremian, evidence including the large number of Iguanodon tracks at Hanover Point and the 100 Hypsilophodon already extracted from the Hypsilophodon beds near the upper boundary of the Wessex Formation.
	www.geocities.com /dinowight/palaeoecology.html (1483 words)

	SUMMARY AND CONCLUSIONS
		This age range includes the estimated Barremian (130 Ma) time of first seafloor spreading at this latitude (Whitmarsh et al., 1990).
		As the sequence youngs upward systematically, rather than showing a disordered age pattern, it is probable that several debris flows were emplaced during the Early Cretaceous, not in post-late Aptian time, and so are related to the last stages of rifting and the earliest seafloor spreading.
		The peridotite must have been exposed at the seafloor during the late Hauterivian(?), early Barremian to late Aptian time, perhaps along a fault scarp, to have contributed clasts to the flows.
	www-odp.tamu.edu /publications/149_IR/chap_04/c4_19.htm (1541 words)

	The Deshayesitidae Stoyanov, 1949 (Ammonoidea) of the Aptian historical stratotype region at Cassis-La Bédoule (SE ...
		the description of an uppermost Barremian fossil-rich (Pseudocrioceras) level, presumably equivalent to the Pseudocrioceras coquandi Zone of Busnardo (1984), which allowed us to establish a formal Pseudocrioceras waageni Subzone in the upper portion of the Martelites sarasini Zone (Ropolo et alii, 1999, 2000a, 2000b, 2000c; Cecca et alii, 1999, 2000).
		Because the stratigraphic range of this genus remains uncertain, it cannot be used as a zonal index in SE France.
		We conclude that at Cassis-La Bédoule as well as in the Caucasus (Georgia) (Kakabadze & Kotetishvili, 1995), Czech Republic (Vašiček & Summesberger, 2004), Bulgaria, Colombia (Hoedemaeker, 2004; Kakabadze, 2004), etc., the concept of an uppermost Barremian waagenoides Zone as proposed by Hoedemaeker & Rawson (2000) may be retained.
	paleopolis.rediris.es /cg/CG2006_M01 (5187 words)

	BARREMIAN PLANKTIC FORAMINIFERAL BIOSTRATIGRAPHY OF THE SAN LUCAS FORMATION, MICHOACAN (SW MEXICO) (Site not responding. Last check: 2007-11-03)
		Biostratigraphical data from the foraminiferal study, permit to establish two planktic zones of Barremian age.
		Hedbergella similis appeared in the early Barremian (Kotetishvilia nicklesi Zone) and the fauna was abundant and increased its size.
		The San Lucas Barremian sequence was deposited in pelagic environmental conditions based on the faunal assemblage and the distinctive lithological characteristics.
	gsa.confex.com /gsa/2003CD/finalprogram/abstract_50219.htm (411 words)

	Dr. James Kirkland, November 30, 2005, UNLV Department of Geoscience, Fall 2005 Seminar
		During the Barremian around 125 million years ago, local salt tectonics in eastern Utah led to the local deposition of terrestrial sediments in the area around Arches National Park.
		The polacanthine ankylosaurs, iguanodontids, and titanosaurid sauropods indicate close temporal and geographic ties to the Barremian of Europe.
		The fossil record in the Cedar Mountain Formation of Utah indicates that a Barremian iguanodont‑polacanthid fauna with European affinities predating common flowering plants was replaced by an Aptian‑middle Albian Tenontosaurus‑Pleurocoelus fauna, perhaps representing an impoverished recovery fauna following a Early Cretaceous extinction event (endemic to North America).
	www.nevada.edu /~ahrager/fall05sem/kirkland.html (636 words)

	Galveodon
		It may not be the most spectacular find of all time, but it's better than nothing.
		Reference: Hahn & Hahn (1992), Neue Multituberculates-Zähne aus der Unter-Kreide (Barremian) von Spanien (Galve und Una).
		(New multituberculate teeth from the Lower Cretaceous (Barremian) of Spain (Galve and Una).)
	www.ebroadcast.com.au /lookup/encyclopedia/ga/Galveodon.html (179 words)

	224
		The Barremian to Aptian sequence is characterized by highly variable, often high, organic carbon concentrations which reach maximum values in the laminated paper shale ("Blätterton") units and in the Fish Shale ("Fischschiefer"; up to 7% C
		This model is based on downwelling of oxygen-rich, saline waters of Tethyan origin, which reduces the nutrient content of surface waters and thus primary bioproductivity while degradation of primary organic matter in the water column is enhanced at the same time.
		Cool, arid climates are thought to typify the late Kimmeridgian to late Ryazanian and Barremian to early Aptian, separated by generally warm and wet periods.
	www.the-conference.com /JConfAbs/4/224.html (7676 words)

	resum74.htm (Site not responding. Last check: 2007-11-03)
		In the southern Vercors, ammonites are well represented in marly level interbedded in the Barremian carbonate series, the stratigraphical location of which is now well known owing to the new ammonite zonation [Delanoy, 1994, 1996, 1997 ; Vermeulen, 1995b, 1996].
		The Glandasse limestone formation is Lower Barremian and basal Upper Barremian (from the Mazuca to the Sartousiana zones) in age.
		From the lowermost Barremian to the top of the Lower Aptian, five associations of orbitolinids are distinguished.
	www.univ-savoie.fr /labos/lgca/produ/publi/resum74.htm (1652 words)

	Cretaceous Fossils: Geologic Time Scale Page
		From oldest to youngest, these are the Berriasian, Valanginian, Hauterivian, Barremian, Aptian, Albian, Cenomanian, Turonian, Coniacian, Santonian, Campanian, and Maastrichtian Stages.
		The historical significance of France and Switzerland is quite apparent from the graphic, as all of the names are derived from these two countries.
		The term Urgonian is derived from beds of Barremian to earliest Aptian (Bedoulian) age from Orgon, Bouches du Rhône (13) of southeastern France.
	www.cretaceousfossils.com /geologic_time_scale.htm (608 words)

	GEOLOGICAL SETTING
		Excepting the Southeast Newfoundland Ridge at the southernmost edge of the rift, no significant thickness of volcanic rocks or magmatic underplating is known to be present in the rift.
		In the northern segment, Flemish Cap has full continental crust thickness of ~30 km (Funck et al., 2003) and it is separated from the shallow Grand Banks by thinned continental crust under the Flemish Pass Basin and Flemish Cap Graben (Enachescu, 1987).
		The unit was interpreted as an upward-fining submarine fan sequence with initial fan deposition in Barremian time and waning deposition in the late Aptian.
	www-odp.tamu.edu /publications/210_IR/chap_01/c1_3.htm (3418 words)

	Istria on the Internet - Paleontology - Sauropod
		T bis rather odd specimen is identified as a dorsal vertebra of a large somphospondylian sauropod.
		DALLA VECCHIA F.M. (1998a) -Remains of Sauropoda (Reptilia, Saurischia) in the Lower Cretaceous Upper Hauterivian/Lower Barremian) limestones of sw Istria (Croatia).
		DALLA VECCHIA F.M. Atlas of the sauropod bones from the upper Hauterivian-lower Barremian of Bale/Valle (SW Istria, Croatia), Natura Nascosta, v.
	www.istrianet.org /istria/paleontology/bale-sauropod1.htm (2013 words)

	INA8
		Barremian stage There exist different controversial opinions about the placement of the base of the Barremian in Bulgaria.
		The upper part of the Lower Barremian corresponds to the H.
		In the Upper Barremian, four successive ammonite zones are identified: E.
	www.nhm.ac.uk /hosted_sites/ina/ina8/abstr_s10.html (796 words)

	Houston Geological Society
		A second phase of rifting, developed during the Barremian (Syn-Rift II), is marked by thermal subsidence and minor extension (Fig.
		During the Barremian, while continental breakup started in Pelotas and Walvis basins with the emplacement of a subaerial mid-oceanic ridge, the second phase of rifting (Syn-Rift II or Pre-Salt Wedge) dominated the northern basins of the South Atlantic.
		One explanation for the presence of marine strata in the rift section of Campos and Kwanza basins is the fast subsidence rate during the Syn-Rift II combined with marine invasions through the seaways in the Pelotas and Walvis basins during periods of high sea level in the Barremian.
	www.hgs.org /oldwebsite/www/meet1297.htm (1689 words)

	mémoire HS n°20 (Site not responding. Last check: 2007-11-03)
		A poor Lower Aptian ammonite assemblage was also identified, with some Pseudohaploceras, Turkmeniceras and Prodeshayesites representatives in its lowermost beds, and later characterised by an assemblage of the Weissi zone.
		It is proposed here to lower the base of the Barremian stage to the base of the Catulloi Zone (= the chronozone based on the biozone of P. catulloi).
		In consequence, the associations of fauna found in the georgian Imerites giraudi and Colchidites securiformis Zones, or Subzones, cannot be exploited usefully in the vocontian upper Barremian, some taxa common to these associations showing, according the literature, clearly a stratigraphic displacement between the two regions.
	www.univ-savoie.fr /labos/lgca/produ/publi/memhs20.htm (5593 words)

	New insight on the stratigraphy of the "Upper Thamama" in offshore Abu Dhabi (U.A.E.)
		A more precise biostratigraphic dating may be possible based on a new evaluation of the orbitolinids by one of us (R.S.) that permits a comparison with the well-known Urgonian limestones of southeastern France and western Switzerland (Charollais et alii, 1992; Clavel et alii, 2002; Schroeder et alii, 2002).
		lenticularis) appears to be the equivalent of Urgonian cycle Barremian 3 as defined by Charollais et alii (1992).
		The foraminifer Choffatella decipiens in Hauterivian and possibly Early Barremian times inhabited shallow water environments in association with calcareous green algae, but in the Late Barremian and thereafter is found only in deeper environments.
	paleopolis.rediris.es /cg/CG2003_A05_BG_etal/index.html (5741 words)

	Early Cretaceous stratigraphy, depositional environments, sandstone provenance, and tectonic setting of central Tibet, ...
		Late Barremian to Albian age of deposition (Fig.
		This faulting is inferred by the distinct difference between the thickness of Hauterivian–Lower Barremian strata (Zelong Group and Duoba Formation) and the bimodal magmatism in columnar section HB-3.
		Distinct negative anomalies in Nb, Ta, and Ti and positive anomalies in Th and Pb are observed in all samples.
	bulletin.geoscienceworld.org /cgi/content/full/116/9-10/1202 (7033 words)

	CCOD Abstracts
		This small fauna in both species number and size seems to persist without apparent changes through most of the Hauterivian, the end of which is characterized by an abrupt short flourishing of the gorbachikellids.
		The lowermost Barremian coincided with a remarkable increase both in abundance and number of planktonic species and genera that continued through the Barremian accompanied by an overall increase in size.
		This trend continued through the lower and lower upper Aptian with a further increase in number of species and overall abundance and size of specimens after the early Aptian Oceanic Anoxic Event 1a (OAE1a).
	cis.whoi.edu /science/GG/ccod/viewAbstracts.cfm?RefNumber=19725582 (529 words)

	Las Hoyas: Lagerstätten Catalogue: University of Bristol
		Concornis, also found at Las Hoyas, is roughly twice the size of Iberomesornis showing that these (still fairly early) birds could achieve relatively large sizes.
		This is common with many extant birds, but had previously not been found on any Mesozoic specimens.
		It was important because it showed Barremian birds could fly and manoeuvre as well almost as well as modern birds.
	palaeo.gly.bris.ac.uk /Palaeofiles/Lagerstatten/Lashoyas/lasfauna.html (934 words)

	Amazon.com: "Early Barremian": Key Phrase page (Site not responding. Last check: 2007-11-03)
		It ranges from the Late Valanginian to the end of the Early Barremian.
		The figures of `Globuligerina' spiralis are very dirty and the early whorls are not discernible in the holotype; in the...
		The paleoenvironmental evolution from Barremian to Late Aptian is summarized.
	www.amazon.com /phrase/Early-Barremian (507 words)

	Cretaceous Dinosaurs
		A small tooth fragment from the Lower Barremian Weald Clay, Surrey.
		Reverse side of tooth on the left from the Lower Barremian Weald Clay, Surrey.
		A small bone fragment from the Lower Barremian Weald Clay, Surrey.
	www.christraxon.pwp.blueyonder.co.uk /cretaceous_dinosaurs.htm (58 words)

	Foreword (Site not responding. Last check: 2007-11-03)
		This fundamental issue is tackled by tracing (volcanic) perturbation signals in a variety of palaeoenvironments along (1) a N-S transect (from the low-latitude Atlantic and Tethys to the Nordic Seas) and (2) selected Tethyan shelf-basin transects [i.e.
		The project is focused on the latest Barremian to early Albian stratigraphic interval (about 122-108 my).
		Complimentary work areas (1) from low, intermediate and high latitudes and from (2) shallow to deep water settings have been chosen within each of which a unique breadth of expertise will be combined bearing the prospect of major advances on previous narrowly specialised case-studies.
	www.palmod.uni-bremen.de /FB5/sedpal/docs/GeoFact.htm (3355 words)

	Cornet & Habib 1992
		Walker and Walker (1984: p.516) concluded from their study of Early Cretaceous pollen that the earliest stage (Stage I) of angiosperm evolution has yet to be recognized.
		Consequently, it is difficult, to know whether the apparent scarcity of angiosperm remains below the Barremian is due to evolution, preservation, sampling error, recognition, limited exposure of Neocomian strata, or some combination of these factors.
		Traverse (1988), Pocock and Vasanthy (1988), Cornet (1979, 1980, 1981, ~1989a), Cornet and Olsen (1990) and Doyle and Hotton (1991) illustrated and/or reported a diversity of pollen from the Late Triassic of North America that exhibit angiosperm cparacteristics, particularly col- umellae, sexine architecture and a non-laminated nexine.
	bcornet.tripod.com /Cornet92/CH92a.htm (7317 words)

	Technical Review
		In the Northern Gabon Basin and extending into southern Rio Muni, the rift section comprises lacustrine and fluvio-deltaic faulted and tilted strata of Barremian and Neocomian age.
		Movement of salt has formed a wide range of prospective traps including diapirs, turtle-backs, and rollover structures to growth faults on the margins of salt walls.
		In northern Rio Muni, the syn-rift section comprises Late Barremian to Mid Aptian terrestrial clastics and lacustrine shales characterised by extensional rollover structures to mega-scale listric faults updip, and toe-thrust structures downdip.
	www.equatorialoil.com /pages/TechReview.html (1024 words)

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