Geological Map of Iowa

Global geological map of Venus

The surface area of Venus ( 460 10 km) is 90% of that of the Earth. Using Magellan radar image and altimetry data, supplemented by Venera-15/16 radar images, we compiled a global geologic map of Venus at a scale of 1:10 M. We outline the history of geological mapping of the Earth and planets to illustrate the importance of utilizing the dual stratigraphic classification approach to geological m...

Early Geological Explorations of the Silurian System in Iowa

Ontology-aided annotation, visualization, and generalization of geological time-scale information from online geological map services

Geological maps are increasingly published and shared online, whereas tools and services supporting information retrieval and knowledge discovery are underdeveloped. In this study, we developed an ontology of geological time scale by using a RDF (Resource Description Framework) model to represent the ordinal hierarchical structure of the geological time scale and to encode collected annotations...

Map Description and Management by Spatial Metadata: Requirements for Digital Map Legend for Planetary Geological and Geomorphological Mapping

Instruments carried along on missions to, e.g., Mars, the Moon, Venus, and various Outer-Solar System objects, produce a rich variety of image data recorded in different wavelengths and some of them allow to derive additional datasets (e.g., digital terrain models). These data form the basis for geologically exploring the evolution of planetary bodies by analyzing and geoscientifically interpre...

GEOLOGICAL MAPPING OF THE YAHK MAP AREA, SOUTHEASTERN BRITISH COLUMBIA: AN UPDATE (82Fll)

This article summarizes new findings of the East Kootenay project after completion of 2 months of fieldwork in the Yahk map area (82F/I) in 1994. The project was initiated in 1993 to provide 130 000-scale geological maps with improved stratigraphic correlations, and to stimulate base metal exploration southwest of the Sullivan mine. Work in 1994 focused on fill-in traverses and measured sect...