Introduction: Volatile species, such as H2O, CO2, F, and Cl, are important in the generation and differentiation of basaltic melts. On the Earth, dissolved H2O (or in certain circumstances CO2) is thought to be the dominant volatile in most basaltic magmas. Therefore, significant effort has been placed on understanding how water and CO2 affect basalt genesis and crystallization of terrestrial m...

[1] We have investigated the effects of crystallization and oxidation on the visible and nearinfrared (VISNIR) and mid-infrared (mid-IR) spectra of materials with a Shergotty-NakhlaChassigny (SNC) basaltic composition in order to investigate potential links between Martian VISNIR spectra, Martian mid-IR spectra, and SNC meteorite data. SNC basalt samples of varying crystallinities were synthesi...

Apollo 14 (A-14) impact melt olivine vitrophyres (OVs), composed of olivine phenocrysts in an opaque glass matrix with minor amounts of pyroxene and plagioclase, are petrographically similar to pristine quenched A-14 high-alumina (high-Al) and Apollo 12 (A-12) basalts. Textural and chemical analyses have been conducted on olivines within impact melt and pristine mare basalt clasts from A-14 bre...

In order to study the mechanical properties of basalt fiber reinforced recycled concrete (BFRRC), nine groups tests are designed with three different replacement rates aggregates (40%, 70%, and 100%) volume fraction fibers (0.1%, 0.2%, 0.3%). Another group on ordinary without aggregate is used as comparison. The workability, cubic compressive strength, splitting tensile flexural strength BFRRC ...

The use of industrial by-products, e.g., fly ash, slag, as complete replacement Portland cement to make alkali-activated concrete (AAC) has become a hot topic due the contribution sustainability in construction industry. AAC comparable compressive strength compared ordinary (OPC) and many advantages, such excellent durability corrosion resistance. However, similar OPC, AACmaterial still certain...

provide a test for the hypothesis of faunal change at the Triassic-Jurassic boundary recently proposed by OLSEN and SUES (1986). They are remarkable for the numerical abundance and quality of preservation of the bones, the lithological diversity of fossil-bearing deposits, and the excellent degree of stratigraphic resolution. The vertebrate remains from the McCoy Brook Formation currently repre...

[1] Lunar sinuous rilles have long been interpreted as features that formed as the result of surficial lava flow, though the precise mechanism responsible for channel formation (constructed versus eroded origins) is still debated. In assessing the origin of Rima Prinz, a channel interpreted to have formed by erosion, two erosion regimes, mechanical and thermal, are considered. Measurements of c...

Introduction: The A16 (Apollo16) site in the lunar nearside highlands is 220 km from the nearest mare. Thus it is no surprise that mare basalt samples are uncommon at the site. Here, we present the petrography and geochemistry of 5 new mare basalt samples found at the A16 site. We also discuss possible provenances of all A16 mare basalt samples using high-resolution global data for the distribu...

Astragalus filipes Torr. ex A. Gray (basalt milkvetch or threadstalk milkvetch) is a legume that is widely distributed in western North Americaandholdspromise forrevegetationandrestorationprograms inthewesternUnitedStates.Seedof67accessionswascollected in2003 from Utah, Nevada, Idaho, Oregon, California, and Washington. Field-collected forage samples from these accessions had nondetectable or l...

Abstract The distinct fiber addition to concrete can improve weak performance in tension. Due its higher performance, hybridization is becoming more and competitive. In this study, the hardened durability characteristics of performance-based reinforced with polypropylene, basalt hooked end steel fibers are investigated. Total 12 mixes prepared evaluate different concrete. influence (0.2, 0.25, ...