Stratigraphic placement of the Santonian-Campanian boundary (Upper Cretaceous) in the North American Gulf Coastal Plain and Western Interior, with implications to global geochronology

Lillegraven, Jason A.

doi:10.1016/s0195-6671(05)80020-5

Cited by 15 publications

(2 citation statements)

References 32 publications

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“…Pessagno (1969) placed the Santonian/Campanian boundary higher in the section, based on planktonic foraminifers. Lillegraven ( 1991) reviewed the discrepancy at this boundary, and ultimately agreed with Young. Stratigraphy: Nomenclature and thickness data are from Young (1963, p. 23 ( 1967) reported the Turonian ammonite Coilopoceras at the top of the underlying Ernst Member.…”

Section: Point Id: L11comentioning

confidence: 72%

Paleogeography and the Late Cretaceous of the Western Interior of middle North America; coal distribution and sediment accumulation

Roberts¹,

Kirschbaum²

1995

Professional Paper

130

163

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Section: Point Id: L11comentioning

confidence: 72%

Paleogeography and the Late Cretaceous of the Western Interior of middle North America; coal distribution and sediment accumulation

Roberts¹,

Kirschbaum²

1995

Professional Paper

130

163

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“…The planktonic Santonian -Campanian boundary has been placed just below the base of chron 33r (Alvarez et al 1977) and is marked by either the first appearance of Globotruncana elevata (Dowsett 1984) or the last appearance of Globotruncana concavata (P. Marks 1984). For purposes of discussion we follow Lillegraven (1991) in considering G. concavata the senior synonym of Dicarinella asymetrica and Dicarinella concavata. As the base of the Campanian in Europe as defined by ammonites, belemnites, and crinoids is within the lower part of chron 33r, the two boundaries do not coincide.…”

Section: Comparisons With Planktonic Foraminiferamentioning

confidence: 99%

Macrofossil magnetobiostratigraphy for the upper Santonian–lower Campanian interval in the Western Interior of North America: comparisons with European stage boundaries and planktonic foraminiferal zonal boundaries

Leahy¹,

Lerbekmo²

1995

Can. J. Earth Sci.

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Magnetostratigraphic samples were collected from the Milk River and Pakowki formations of southeastern Alberta to determine the polarity chron 34-33r boundary. This boundary was located in the upper half of the Deadhorse Coulee Member, and is below the first local occurrence of the Western Interior ammonite Baculites obtusus. Comparison with the laterally equivalent Eagle Sandstone of Montana and Niobrara Formation of Colorado indicates that the 34-33r contact is within either the Baculites sp. (smooth) or Baculites sp. (weak flank ribs) ammonite zone in the Western Interior of North America. Direct correlation of the Desmoscaphites erdmanni through Baculites asperifomis Western Interior ammonite zones with magnetobiostratigraphic sections of the upper Santonianlower Campanian stages in Europe suggests that (i) the Santonian-Campanian boundary as defined in Europe is within the lower Baculites obtusus Zone and (ii) the Western Interior appearance of some ammonites and crinoids (Scaphites hippocrepis, Trachyscaphites spiniger, Marsupites, Uintacrinus) is profoundly time transgressive relative to the appearance of these same species in Europe. The date of 84 Ma for the Santonian-Campanian boundary is too old, and a date of around 80 Ma may be more accurate. The Santonian-Campanian boundary defined by ammonites, crinoids, and belemnites in Europe is within the lower part of chron 33r, and is younger than the Santonian-Campanian boundary as determined by planktonic foraminifera at Gubbio, Italy. Resume : Des Cchantillons magnetostratigraphiques ont tt6 prt5levCs dans les formations de Milk River et de Pakowki, dans le sud-est de I'Alberta, pour determiner la polarite de la limite skparant les chrons 34 et 33r. Cette limite a Ct C IocalisCe dans la moitiC supkrieure du Membre de Deadhorse Coulee, et elle est sous-jacente au niveau marquant le dCbut de l'apparition de I'ammonite Baculites obtusus dans la plate-forme de I'IntCrieur. Une comparaison avec les unites, lattralement Bquivalentes, du Grbs d'Eagle du Montana et de la Formation de Niobrara du Colorado suggbre que le contact 34-33r se trouve i I'intCrieur de la zone i ammonites Baculites sp. (unie) ou Baculites sp. (flancs i cBtes fines), dans la plate-forme de 1'Inttrieur de 1'Amtrique du nord. La mise en corrClation directe des zones h ammonites Desmoscaphites erdmanni jusqu'i Baculites asperifomis avec les coupes magnCtostratigraphiques des ttages Santonien supCrieur -Campanien infkrieur en Europe suggbre (i) que la limite Santonien-Campanien, telle que dtfinie en Europe, est localiste dans la partie inferieure de la Zone a Baculites obtusus et (ii) que I'apparition de certaines espbces d'ammonites et de crinoides (Scaphites hippocrepis, Trachyscaphites spiniger, Marsupites, Uintacrinus) reflbte une phase transgressive largement diachronique, relativement i l'apparition de ces m6mes espkces en Europe. La date de 84 Ma assignBe B la limite Santonien-Campanien est trop ancienne, une date de 80 Ma serait plus exacte. La limite Santonien-Campanien dtfinie par les...

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Paleomagnetic and palynologic analyses of Albian to Santonian strata at Bayn Shireh, Burkhant, and Khuren Dukh, eastern Gobi Desert, Mongolia

Hicks

Brinkman

Nichols

et al. 1999

Cretaceous Research

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Stratigraphic placement of the Santonian-Campanian boundary (Upper Cretaceous) in the North American Gulf Coastal Plain and Western Interior, with implications to global geochronology

Cited by 15 publications

References 32 publications

Paleogeography and the Late Cretaceous of the Western Interior of middle North America; coal distribution and sediment accumulation

Paleogeography and the Late Cretaceous of the Western Interior of middle North America; coal distribution and sediment accumulation

Macrofossil magnetobiostratigraphy for the upper Santonian–lower Campanian interval in the Western Interior of North America: comparisons with European stage boundaries and planktonic foraminiferal zonal boundaries

Paleomagnetic and palynologic analyses of Albian to Santonian strata at Bayn Shireh, Burkhant, and Khuren Dukh, eastern Gobi Desert, Mongolia

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