It is suggested that homotaxial biostratigraphic units are an unsuitable basis for the definition of a New Zealand Tertiary geological time scale. Three other possible ways of setting up a time scale are discussed, and it is concluded that stratigraphic marker pegs offer the best basis for a rigorously defined time scale. In order to avoid the disadvantages of a hierarchical system of naming it...

It has been demonstrated that in shales of the MidProterozoic Newland Formation the long axis of the AMS ellipsoid A) coincides with the flow azimuth indicated by macroscopic paleoflow indicators and B) is inclined in an upcurrent direction. Following this finding, oriented samples were collected from the Newland Formation and its lateral equivalents over the entire extent of the southeastern B...

Results of this study have included five fieldwork papers (Bickford and Kenyon, 1988; Kenyon and Bickford, 1989, Bickford, et al., 1989 and 1990; Cathyl-Bickford, 1992), one stand-alone paper (Kenyon, Bickford and Hoffman, 1991) and a set of fourteen maps (CathylBickford and Hoffman, 1998). In the course of this work, 21 stratigraphic sections were measured, and four of the sections were publis...

Introduction: Gale Crater is a ~150 km diameter impact crater located at 5.3°S, 137.7°E that contains a thick (>5 km) sequence of strata interpreted as sedimentary rocks [1]. Gale is one of four final candidate landing sites for the 2011 Mars Science Laboratory (MSL) rover. Recent data acquired by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument show evidence for clay...

The Middle Jurassic (Bathonian)-Upper Cretaceous (Maastrichtian) deposits exposed at the southern front of Central High Atlas (CHA, Southern Morocco) include thick fluvial successions largely undifferentiated in previous studies. These continental strata record a long period relief formation due to crustal shortening and subsequent denudation that predated Cenozoic, syn-collisional, tectonic in...

A number of informal terms (e.g., Anthropocene, Anthropozoic, Psychozoic, Noozoic, and Technogene) have been used to designate the rock unit and time interval where the impact of collective human action on the Earth system is clearly recognizable (called here the Humanized Earth System or HES). Presently, Anthropocene is the most commonly used, and the International Commission on Stratigraphy i...

We use stone tool refitting to assess palimpsest formation and stratigraphic integrity in the basal units of the Gruta da Oliveira archeo-stratigraphic sequence, layers 15-27, which TL and U-series dating places in late Marine Isotope Stage (MIS) 5 or early MIS 4. As in most karst contexts, the formation of this succession involved multiple and complex phenomena, including subsidence, bioturbat...

The Gurpi Formation, one of the geologycal units of the Zagros Basin, stretches with in the Folded Zagros in the provinces of Khuzestan, Lorestan, and Fars,in southwest Iran. In all 525 samples were collected from five stratigraphic sectiones of the Gurpi Formation in Dezful embayment Zone for studying biostratigraphy. Totally 47 species from 23 Planktonic foraminifera genera were recognized in...

Quaternary stratigraphic units have been mapped in the Appalachian region of southeastern Quebec, and formal stratigraphic names for these units are proposed. Evidence exists for four separate glacial phases, the last three of which are represented by tills. The three tills, from oldest to youngest, have been named Johnville, Chaudiere, and Lennoxville, respectively. Stratified sediments interb...