Abstract: A new species Ammonoceratites gigantues is described from the Albian of the Miyako Group, Iwate Prefecture, Japan. Ammonoceratites ezoense (Yabe) is supported as distinct from A. mahadeva (Stoliczka).
Keywords: Albian, ammonoids, Ammonoceratites, Miyako Group, Japanp.31-38

Abstract: This paper discusses applied geological reason why many cutting stones of granite were used for stone walls of the renewal Osaka castle in 1628. Weathered granite has fresh core stones surrounded masa with fractures of lamination sheeting. It is easy even by human power to quarry fresh cutting stones from exposed core-stones which are not surrounded with masa by erosion. Because rifts being systematic micro cracks are developed in granite, it is possible to be cut and divided into rectangular parallelepiped along the rifts. It seems that stonemasons knew such nature of granite.
Keywords: Shodoshima Island, cutting stone, Osaka castle, lamination sheeting, core-stone, rift
p.39-52

p.53-75

Abstract: Deformation structure of Aratozawa landslide induced by the 2008 Iwate-Miyagi inland-earthquake has been analyzed and discussed on its movement structure. It was a reactivated landslide covering three ancient landslides. The Aratozawa landslide is separated into nine domains through its long distance movement more than 300m in very rapid velocity. Each domain in main part of the landslide shows translational slide but rotational slide in the most rear part or left-side part. Upthrust or vertical uplift movement of small blocks can be seen in a domain’s terminal. However, the total movement structure can be described as spread in type as rear domains set up keeping similar interval. The slide layer located in thinly alternated beds of siltstone and mudstone deposited in the Kurikoma caldera lake of Pliocene or Pleistocene in age. The slide layer is thought of a reactivated one inherited from the ancient landslides, because brecciated layers can be observed at the basal parts of some domains. The surface projection of an asperity of the earthquake fault is closely located in 2 or 6 km from the landslide but the epicenter of the earthquake far in 15 km. To analyze on relation between an earthquake and landslides we should focus on an asperity of a fault.
Keywords: earthquake induced-landslide, landslide structure, translational slide, spread, asperity, caldera-lake deposits
p.77-93

Abstract: Shutter Sync Stereo Cameras were developed. An experimental instrument is composed of two digital SLR cameras with a relay and wired remote switch. Another one is composed of two compact digital cameras with a remote switch and internal programs. The sync of shutter is less than 1/1000 seconds for both instruments. The instruments were applied to the mini indoor channel experiment. It was recorded that topography around the drainage was being eroded.
Keywords: Digital camera, Stereo-photograph, Synchronized shutter
p.95-103

Abstract: This is a guide for GIS beginners who want to use digital terrain data, but don’t know how to use it very well. This guide describes the procedural guides and reminders about drawing some figures which help us understand landforms intuitively such as elevation tints map, slope angle map, cross section diagram, and birds-eye view, and drawing some objects which are used for landform division and drawing distribution map etc. This guide is written for a user of the GIS software “SuperMapGIS”. However, this guide can also help people use other GIS software, because many operational procedures in it are similar with those of other popular GIS software.
Keywords: GIS, Digital Elevation Mode
p.105-115

Abstract: The photo-elastic techniques were originally developed in the stress analysis of various machines and artificial constructions. These techniques have recently been applied to the solid earth sciences. An example is the stress analysis of the gouge layers under shear stress condition, which was already reported in the Annual Report No.10 of Fukada Geological Institute (“An analysis of the internal structure of gouge layers under shear stresses and a trial for prediction of slips” by Yoshioka and Sakaguchi ). Another one is the sandpile experiments using photo-elastic materials. These examples were done by the author. In this paper, I will introduce experiments done by other researchers in addition to the experimental works done by myself and consider the possibility of applying the photo-elastic technique to solid earth sciences.
Keywords: photo-elasticity, gouge, stress chain, sandpile experiment, solid earth science
p.117-127

Abstract: To estimate the static Young’s modulus and unconfined compressive strength of sedimentary rocks, rock physics models are applied to seismic velocity data obtained from well loggings and laboratory tests. Dynamic and static Young’s moduli are calculated using the sandy shale model and its extension, and compared with actual measurements. The extended sandy shale model has an additional parameter representing a slip between grains for modeling a nonlinearity of the elastic modulus. The comparison shows good agreement between calculated and measured data. For modeling the unconfined compressive strength (UCS), the percolation theory is used for understanding the upper bound of UCS observed in the actual measurements. The rock physics model which is applicable to the seismic velocity can be also used for rationally estimating the maximum UCS of a rock from its seismic velocity.
Keywords: rock physics, geophysics, Young’s modulus, unconfined compressive strength
p.129-137

p.139-153

Abstract: Up to now, various structures have been constructed in the underground space because they have advantages in earthquake resistance and durability, though the construction cost is high. However, these advantages are not accepted only by chanting a vague advantage in the society after the collapse of the bubble economy, and a definite evaluation from the viewpoint of the performance becomes important. Here, the current state of the aseismic assessment in underground structures was investigated, the problem was clarified, and future tasks were examined.
Keywords: underground structure, aseismic design, tunnel, underground cavern, high level radioactive waste disposal
p.155-166