{"id":{"repo_id":"central-wash","oai_identifier":"oai:digitalcommons.cwu.edu:etd-1754"},"canonical_url":"https://search.dev.ndltd.org/etd/central-wash/oai:digitalcommons.cwu.edu:etd-1754","repository":{"repo_id":"central-wash","name":"Central Washington University","base_url":"https://digitalcommons.cwu.edu/do/oai/"},"display":{"title":"Using Strontium Isotopes in Conjunction with Major, and Trace Elements to Identify Water/Rock Interaction in the Upper Kittitas County, Washington","abstract":"The complex bedrock lithologies in the Upper Kittitas County provide an ideal setting for developing isotopic methodology to identify groundwater sources and track flow paths through water-rock interaction. A wide range of 87Sr/86Sr (0.7040 to 0.7068) in surface waters, springs, and groundwater from wells was found, allowing for identification of the individual signatures of lithologic units. Rock leachates from different lithology were compared to water samples to determine a general 87Sr/86Sr signature of the water-rock interaction for that lithology. The signatures identified were systematically lower than their associated waters, but similar enough to identify the expected 87Sr/86Sr of water-rock interaction for most of the units. These signatures can then be compared to unknown waters to identify the source and/or mixing between sources. Using this method, many of the water samples in this study were directly correlated to their sources. The greatest limitations of this method were lithologies that were not geochemically homogenous and overlap in ranges of 87Sr/86Sr for different lithology.","abstract_html":"The complex bedrock lithologies in the Upper Kittitas County provide an ideal setting for developing isotopic methodology to identify groundwater sources and track flow paths through water-rock interaction. A wide range of 87Sr/86Sr (0.7040 to 0.7068) in surface waters, springs, and groundwater from wells was found, allowing for identification of the individual signatures of lithologic units. Rock leachates from different lithology were compared to water samples to determine a general 87Sr/86Sr signature of the water-rock interaction for that lithology. The signatures identified were systematically lower than their associated waters, but similar enough to identify the expected 87Sr/86Sr of water-rock interaction for most of the units. These signatures can then be compared to unknown waters to identify the source and/or mixing between sources. Using this method, many of the water samples in this study were directly correlated to their sources. The greatest limitations of this method were lithologies that were not geochemically homogenous and overlap in ranges of 87Sr/86Sr for different lithology.","abstract_has_math":false,"creators":["Patterson, James","Gazis, Carey"],"institution":null,"degree_name":"Master of Science (MS)","degree_level":null,"degree_discipline":"Geological Sciences","degree_department":null,"school":null,"contributors":["Carey Gazis","Anne Johansen","Winston Norrish"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-01-01T08:00:00Z","date_published":"2017-01-01T08:00:00Z","updated_at":"2026-07-24T01:37:09Z","subjects":["Strontium","Sr87/Sr86","Kittitas","Geochemistry","Elements","Geology","Hydrology","Water Resource Management"],"languages":["English"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.cwu.edu/etd/780","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Carey Gazis","Anne Johansen","Winston Norrish"]},{"key":"dc:creator","label":"Author","values":["Patterson, James","Gazis, Carey"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2017-09-22T07:00:00Z"]},{"key":"dc:type","label":"Dc Type","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Geological Sciences"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Strontium","Sr87/Sr86","Kittitas","Geochemistry","Elements","Geology","Hydrology","Water Resource Management"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.cwu.edu/etd/780"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The complex bedrock lithologies in the Upper Kittitas County provide an ideal setting for developing isotopic methodology to identify groundwater sources and track flow paths through water-rock interaction. A wide range of 87Sr/86Sr (0.7040 to 0.7068) in surface waters, springs, and groundwater from wells was found, allowing for identification of the individual signatures of lithologic units. Rock leachates from different lithology were compared to water samples to determine a general 87Sr/86Sr signature of the water-rock interaction for that lithology. The signatures identified were systematically lower than their associated waters, but similar enough to identify the expected 87Sr/86Sr of water-rock interaction for most of the units. These signatures can then be compared to unknown waters to identify the source and/or mixing between sources. Using this method, many of the water samples in this study were directly correlated to their sources. The greatest limitations of this method were lithologies that were not geochemically homogenous and overlap in ranges of 87Sr/86Sr for different lithology."]},{"key":"dc:title","label":"Title","values":["Using Strontium Isotopes in Conjunction with Major, and Trace Elements to Identify Water/Rock Interaction in the Upper Kittitas County, Washington"]}]}],"canonical_facts":{"dc:contributor":["Carey Gazis","Anne Johansen","Winston Norrish"],"dc:creator":["Patterson, James","Gazis, Carey"],"dc:date.available":["2017-09-22T07:00:00Z"],"dc:description.abstract":["The complex bedrock lithologies in the Upper Kittitas County provide an ideal setting for developing isotopic methodology to identify groundwater sources and track flow paths through water-rock interaction. A wide range of 87Sr/86Sr (0.7040 to 0.7068) in surface waters, springs, and groundwater from wells was found, allowing for identification of the individual signatures of lithologic units. Rock leachates from different lithology were compared to water samples to determine a general 87Sr/86Sr signature of the water-rock interaction for that lithology. The signatures identified were systematically lower than their associated waters, but similar enough to identify the expected 87Sr/86Sr of water-rock interaction for most of the units. These signatures can then be compared to unknown waters to identify the source and/or mixing between sources. Using this method, many of the water samples in this study were directly correlated to their sources. The greatest limitations of this method were lithologies that were not geochemically homogenous and overlap in ranges of 87Sr/86Sr for different lithology."],"dc:identifier":["https://digitalcommons.cwu.edu/etd/780"],"dc:language":["English"],"dc:subject":["Strontium","Sr87/Sr86","Kittitas","Geochemistry","Elements","Geology","Hydrology","Water Resource Management"],"dc:title":["Using Strontium Isotopes in Conjunction with Major, and Trace Elements to Identify Water/Rock Interaction in the Upper Kittitas County, Washington"],"dc:type":["Text"],"thesis:degree_discipline":["Geological Sciences"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T01:37:09Z"}