Maestrichtian calcareous nannofossils of MAud Rise, Weddell Sea

Recovery of an essentially complete upper Maestrichtian/lower Paleocene interval on Maud Rise at 65 °S latitude in the Weddell Sea during Ocean Drilling Program Leg 113 marks the first time that this interval has been cored at these high latitudes. The entire interval was missing at all Falkland Plateau sites drilled during DSDP Legs 36 and 71. Maestrichtian nannofossil assemblages in sediments from Sites 689 and 690, therefore, provide the basis for a needed revision of Maestrichtian coccolith zonation schemes for high southern latitudes. Three zones and two new subzones are described: the uppermost Maestrichtian Nephrolithus frequens Zone, which is subdivided into the Cribrosphaerella daniae Subzone and the underlying N. corystus Subzone, and the Biscutum magnum and B. coronum Zones. A complete calcareous nannofossil biostratigraphy based on the proposed scheme is given including a description of individual species abundance, preservation, and stratigraphic distribution. At this site, the southernmost carbonate site yet drilled by DSDP/ODP, it is evident that the Falkland Plateau Nannofossil Biogeographic Province can be extended to the margins of Antarctica. In addition, the biogeographic ranges of many calcareous nannofossils can likewise be extended. Last, we hypothesize that Nephrolithus frequens evolved from N. corystus prior to its dispersal to the lower latitudes where it is an important zonal marker. Three new taxa, Neocrepidolithus watkinsii n. sp., Nephrolithus frequens miniporus emend, n. comb, and Psyktosphaera firthii n. gen., n. sp. are described.

Abundance of calcareous nannofossils in ODP Hole 121-752B (Table 1)

A biostratigraphically complete Cretaceous/Tertiary boundary was recovered during Ocean Drilling Program Leg 121. The boundary, cored in ODP Hole 752B on Broken Ridge, is the most expanded deep-sea section yet recovered by ODP/DSDP. The initial Danian subzone, CP la, spans nearly 5 m and the underlying uppermost Maestrichtian Nephrolithus frequens Zone extends 50 m below the boundary. The paleolatitude of Broken Ridge at Cretaceous/Tertiary time is estimated at 50°-55°S which includes this site among the latest in a series of complete or near complete high southern latitude Cretaceous/Tertiary boundary sections recovered by ODP (Leg 113 Site 690 and Leg 119 Site 738). The boundary at Site 752 lies at the base of a thick (6-6.5 m) volcanic ash unit composed of multiple ash layers which overlies indurated Maestrichtian chalks. Magnetostratigraphy indicates that the boundary lies within Subchron 29R, which is the case for all other known complete sections for which the polarity has been determined. Anomalous abundances of the trace element iridium are present at the boundary. A second iridium peak, 80 cm above the boundary, corresponds to an increase in redeposited Cretaceous nannofossils. The nannofossil succession is similar to that found at previously studied austral high-latitude ODP drill sites with few differences due to the more northerly location of this site. Individual nannofossil species were counted and placed into three categories. A plot of the percent abundance of Cretaceous, Tertiary, and 'survivor' groups illustrates the rapid replacement of the Cretaceous nannoflora by 'survivor' forms beginning at the boundary and the dominance of this latter group through the initial Danian biozone. This 'survivor' or opportunistic assemblage is then rapidly replaced by newly evolved Tertiary taxa. The assemblage of the uppermost Maestrichtian is biased toward dissolution-resistant forms such as Micula decussata. In those few intervals where preservation is good, the dissolution susceptible species, Prediscosphaera stoveri, is more prevalent and overall diversity of the assemblage is higher. The 'survivor' assemblage is dominated by Zygodiscus sigmoides and Thoracosphaera. The Tertiary assemblage consists of rare Biantholithus sparsus, the first of this group to appear. It is followed several meters upsection by Cruciplacolithus primus. Cruciplacolithus tenuis and small Prinsius spp. dominate the assemblage beginning at about 5 m above the boundary.

(Table 1) Distribution of upper Campanian-lower Maestrichtian calcareous nannofossils at DSDP Hole 71-511

Calcareous nannofossils from upper Campanian-lower Maestrichtian Deep Sea Drilling Project Leg 71 Cores 511-23 and 511-24 are described and correlated with assemblages of similar age from piston and drill cores on the Falkland Plateau, South Atlantic Ocean. The Leg 71 cores partially fill a drilling gap of at least 20 meters left within a thick (50 m) carbonate section first drilled by DSDP Leg 36 at Site 327. Cores 511-23 and 511-24 both fall within the upper portion of the Biscutum coronum Zone of Wind and demonstrate an overlap in the range of Monomarginatus quaternarius with the ranges of M. pectinatus, Misceomarginatus pleniporus, and Biscutum coronum across the Campanian/ Maestrichtian boundary. Resolution of the sequence of highest occurrence datums for the latter species must await the recovery of a more complete section. Comparison of the Site 511 assemblages with those from Mas Orcadas Core 07-75-44 to the north confirms earlier speculation that the Falkland Plateau served as an important boundary between major water masses during the Late Cretaceous.

Scotus moralis pro confessariis humili manu expositus : in quo ea, quae subtilis doctor in quatuor sententiarum & quolibeta sparsim docuit, interrogatorij forma inspiciuntur...

UANL

A importância de Scotus na concepção de história de Arendt

The objective of this study is to discuss the notion of history in Arendt, from the importance that needs the thought of Duns Scotus, particularly with regard to the primacy of the will. For the author, Scotus was a medieval thinkers to emphasize the role of free will as power in the face of intellect attached to the natural activity. The freedom to get an act featuring a world ruled by contingency. Now, for Arendt, that freedom is consistent with your idea of authentic political, and base a public space, defined by word and action of individuals. The history, which takes place from political activity, received various treatments, from Greek antiquity to the modern conception of process. It joined the idealistic conceptions, establishing universal ways of defining the future. However, if freedom is to characterize the vita activa, the history must seek the meaning of the facts to scrutinize their singular aspects, which fell to the continuo of universal explanation of the official history. It is, therefore, to approach the history from the perspective of singular narrative, from the spectators, those who founded the public space. Hence the importance of bipolar concepts such as nature and freedom, necessity and contingency, will and intellect, as Scotus.

Die Beziehungen des Johannes Duns Scotus zum Judenthum

Jakob Guttmann

Scotus nouissime cum emendatissimo codice parisino castigatus : additis repo[n]sionibus ad argumenta locis suis, [et] annotationibus opinionum diuerso[rum] doctorum, ac etiam textuum co[m]mento[rum] Aristotelis in marginibus, nec no[n] textu magistri sent

Juan Duns Escoto, Beato, ca. 1266-1308. Scotus super secundo sententiarum. [Venetiis : Bonetus Locatellus, impens. Octauiani Scoti], 18 dic. 1497]. 84 h. : il. Sign.: A-K8, L4

Duns Scotus,

Reprint of the 1927 ed. published by Clarendon Press, Oxford.

Magister Iohannes Maioris Scotus.

Datos tomados de Baudrier.

Scotus academicus seu universa Doctoris Subtilis theologica dogmata /

Mode of access: Internet.

Die Ermöglichung des endlichen Seins nach Johannes Duns Scotus /

Includes index.

Das Glaubensverständnis bei Johannes Duns Scotus.

Inaug.-Diss.--Munich, 1966.

Die Relationen der Identität und Gleichheit nach Johannes Duns Scotus; Untersuchungen zur Ontologie der Beziehungen.

Diss. - Bonn.

Johannes Scotus Erigena und die Wissenschaft seiner Zeit mit allegemeinen Entwicklungen der Hauptwahrheiten auf dem Gebiete der Philosophie und Religion, und Grundzügen zur einer Geschichte der speculativen Theologie /

"Erster Theil." No more published.

Johan Scotus Erigena; oder, Von dem Ursprung einer christlichen Philosophie und ihrem heiligen Beruf.

Mode of access: Internet.