Sökning: "rock chemistry"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden rock chemistry.

1. 1. Hydrogeological and economic analysis of a groundwater-based water supply system in rural Nepal

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Väg- och vattenbyggnad (CI); Lunds universitet/Teknisk geologi

   Författare :Hamon Hedayatnasab; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : Access to safe drinking water and sanitation is a given standard and considered as basic human rights in urban areas and industrialized countries. However, 40 % of the world's population living in rural areas in developing countries lack access to safe drinking water. LÄS MER

3. 2. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

   Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

   Författare :Nsioh Elvis Nkioh; [2022]
   Nyckelord :geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

   Sammanfattning : One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. LÄS MER

4. 3. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Scott Green; [2022]
   Nyckelord :biosignature; tubular structures; Lower Cambrian; silica precipitation; bifurcating; biosignatur; rörstrukturer; Kambrium Serie 3; kiseldioxid utfällning; förgrening;

   Sammanfattning : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. LÄS MER

5. 4. Petrography and Mineral Chemistry of the Sälskär Breccia (Alnö Alkaline Complex, Central Sweden)

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Vincent Gustafsson; [2022]
   Nyckelord :Alnö alkaline complex; diatreme; melilitite; pelletal lapilli; volcanic breccia; Alnö alkalina område; diatrem; melilitit; pelletal lapilli; vulkanisk breccia;

   Sammanfattning : Primitive magmas can provide important details about the mantle from which they are derived. In this thesis, petrographic observations and new mineral chemistry analyses of the Sälskär breccia from the Alnö alkaline complex, central Sweden, are reported. LÄS MER

7. 5. Evaluation of long-term effects of excavated sulfide-bearing rock : - A case study in western Sweden

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Författare :Ida Sundblom; [2022]
   Nyckelord :sulfide-bearing rock; acid rock drainage; sulfide oxidation;

   Sammanfattning : Sulfide-bearing rock that is excavated in conjunction with construction projects can cause environmental and construction engineering problems. Sulfidic minerals oxidize when they are exposed to an oxidant and water, which can make them generate acid rock drainage (ARD) with high concentrations of metals and sulphate. LÄS MER