The Ordovician System, cropping out in southern and west-central Jordan, consists entirely of a 750 m thick clastic sequence that can be subdivided into six formations. The lower Disi Formation starts conformably above the Late Cambrian Umm Ishrin Formation. According to Cruziana furcifera occurring in the upper third of the Disi Formation, an Early Ordovician age is con®rmed. The Disi Formatio...

Abstract. The Pliocene-Recent is associated with many important climatic and paleoceanographic changes, which have shaped the biotic abiotic nature of modern world. closure Central American Seaway development intensification Northern Hemisphere ice sheets had profound global impacts on latitudinal vertical structure oceans, triggering extinction radiation marine groups. In particular, calcifyin...

This paper presents a computer effective nonlinear time-domain strip theory formulation for dynamic positioning (DP) and low-speed manoeuvring. Strip theory or 2D potential theory, where the ship is divided in 20 to 30 cross sections, can be used to compute the potential coefficients (added mass and potential damping) and the exciting wave loads (Froude-Krylov and diffraction forces). Commercia...

The siliceous nature of the Mowry Shale distinguishes it from many well-studied organic-rich mudstones Cretaceous Western Interior Seaway. Available models organic enrichment in rarely incorporate detailed biomarker, bulk organic, inorganic, and mineralogy data. Here, we used these data to evaluate how variations matter source, productivity, dilution, preservation modulated accumulation during ...

The first occurrence of the belemnite species Liobelus acrei (formerly Acroteuthis acrei) is reported from Lower Cretaceous (Valanginian) Vocontian Basin (VB; south-east France). This record genus (Family Cylindroteuthididae), which commonly attributed to latest Jurassic and Early Boreal Realm, revises spatial distribution pattern boreal belemnites significantly. Valanginian assemblages VB are ...

The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and East Asian summer monsoon precipitation histories on the Chinese Loess Plateau through joint analysis o...

Transoceanic shipping is the dominant vector for exotic species introductions in the North American Great Lakes. Over 60% of the invaders discovered since the opening of the St. Lawrence Seaway in 1959 are attributable to ballast water release (Ricciardi, 2006). Ocean-going vessels have been required since 1993 to exchange their filled ballast tanks at sea to reduce the abundance and viability ...