I will start this treatise with a history of two major themes in data integration. In my opinion, the topic began with the major retailers in the 1990s consolidating their sales data into a data warehouse. To do this they needed to extract data from in-store sales systems, transform it into a predefined common representation (think of this as a global schema), and then load it into a data wareh...

In order to automate the scooping task, it is desirable that the resistive force acting on the bucket be obtained before the scooping is performed. The objective of this study is to derive theoretically the resistive forces acting on the bucket during scooping of piled rock fragments. First, the changes in the shape of the rock pile due to the penetration of it by the bucket are modeled. Based ...

Introduction: Angrites are a rare group of achondrites notable for their critical silica undersaturation, lack of shock metamorphic features and ancient crystallisation ages [1-3]. They are sub-divided into plutonic or basaltic angrites on the basis of their inferred petrogenesis. Similar studies to those already carried out on HEDs and shergottites [4, 5] could be used to shed light on magmati...

The Shumagin batholith is part of the Sanak-Baranof plutonic belt in Southwest Alaska that extends approximately 2200km from Sanak Island in the west to Baranof Island in the east. (Hudson, 1979; Hudson et al., 1979; Hill et al., 1980; Bradley et al., 2000; Haeussler et al., 2003). Previous work has indicated that the crystallization ages of the Sanak-Baranof plutons young from west to east. Th...

[1] The Talkeetna arc is one of two intraoceanic arcs where much of the section from the upper mantle through the volcanic carapace is well exposed. We reconstruct the vertical section of the Talkeetna arc by determining the (re)crystallization pressures at various structural levels. The thermobarometry shows that the tonalites and quartz diorites intruded at 5–9 km into a volcanic section esti...

The titanium concentrations of 484 zircons with U-Pb ages of *1 Ma to 4.4 Ga were measured by ion microprobe. Samples come from 45 different igneous rocks (365 zircons), as well as zircon megacrysts (84) from kimberlite, Early Archean detrital zircons (32), and zircon reference materials (3). Samples were chosen to represent a large range of igneous rock compositions. Most of the zircons contai...

The Pacific Rim Complex is exposed in a fault-bounded slice along the west coast of Vancouver Island. It is divided into two parts: (I) the Ucluth Formation, a basement unit composed of lower Mesozoic arc-volcanic rocks, and (2) a suprajacent sedimentary se­ quence, more than 2 km thick, composed of Lower Cretaceous olistostromal melanges. An unconformity is present, at least locally, at the Uc...

Abstract. The origin of large miarolitic (also known as “chamber”) pegmatites is not fully understood although they may have great economic value. formation cavities in magmatic bodies related to melt degassing and gas or fluid flow through partially solidified magma. In this paper, the Volyn pegmatite field, located Palaeoproterozoic Korosten anorthosite–mangerite–charnockite–granite (AMCG) co...

Large silicic explosive eruptions are one of Nature's most hazardous phenomena. Very few have been witnessed and unravelling the complex conditions that lead to these remains a difficult task because characteristics feeding magma reservoirs still insufficiently constrained from geophysical imaging. Here we show barometer based on composition amphibole in equilibrium with plagioclase biotite, co...