Abstract Exhumation of basement rocks on the seafloor is a worldwide feature along passive continental margins and (ultra-) slow-spreading environments, documented by dredging, drilling or direct observations diving expeditions. Complementary from exhumed ophiolites in Alps allow for better understanding underlying processes. The Aiguilles Rouges ophiolitic units (Val d’Hérens, Switzerland) are...

Integrated structural/geochronological studies help unraveling complex brittle deformation histories. We have analysed the structural geological database of faults from ONKALO™ underground facility for spent nuclear fuel in Olkiluoto southwestern Finland. Based on data eleven representative fault zones, we classify features into four systems, referred to as Fault system I IV. The classification...

An introduction to the Bouguer anomaly map of Finland is presented. Anomaly sources from surface to upper mantle are discussed both qualitatively and quantitatively. Related density variations are reviewed. The article is based on gravity data from the Finnish Geodetic Institute supplemented by petrophysical and gravity data from the Geological Survey of Finland. The Finnish Geodetic Institute ...

In 1994, a joint Japanese-American dive program utilizing the worlds deepest diving active research submersible (SHINKAI 6500) was carried out at the western ridge-transform intersection (RTI) of the Mid-Atlantic Ridge and Kane transform in the central North Atlantic Ocean. A total of 15 dives were completed along with surface-ship geophysical mapping of bathymetry, magnetic and gravity fields....

Introduction. Comprehensive and efficient investigations of the earliest peopling Southern Urals became possible after discovery Mysovaya site in Abzelilovsky District Bashkortostan (Russia). The Paleolithic materials from this were considered mixed — Acheulean/Mousterian or Mousterian proper. In recent years, Lower Middle Kusimovo-8 has been discovered nearby. This is a scattered workshop on p...

Recent studies have focused on the question of the stratigraphic sequence and thus the stages of tessera formation, specifically, if tessera re formed by contractional deformation followed by extensional deformation or vice versa. A major question centers on the interpretation of specific lineaments within tesserae as graben (bounded by faults -•60 ø) or, alternatively, open tension fractures (...

The main objective of this study was to investigate the performance of a roadheader used for the excavation of Küçüksu Sewage Tunnel having a length of 1037.52 m. The tunnel is located in Anatolian part of Istanbul and constructed by STFA for Istanbul Water and Sewerage Administration (ISKI). Detailed statistical analysis showed that net advance rate of the roadheader is directly influenced by ...