(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59
Equilibrium melting and controlled cooling experiments were undertaken to constrain the crystallization and cooling histories of tholeiitic basalts recovered by the Ocean Drilling Program drilling of Site 989 on the Southeast Greenland continental margin. Isothermal experiments conducted at 1 atm. a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.804763 2024-09-15T18:09:48+00:00 (Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 Lesher, Charles E Cashman, Katharine V Mayfield, J D LATITUDE: 63.522500 * LONGITUDE: -39.901900 * DATE/TIME START: 1995-09-17T18:00:00 * DATE/TIME END: 1995-09-20T13:30:00 * MINIMUM ELEVATION: -459.5 m * MAXIMUM ELEVATION: -459.5 m 1999 text/tab-separated-values, 253 data points https://doi.pangaea.de/10.1594/PANGAEA.804763 https://doi.org/10.1594/PANGAEA.804763 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.804763 https://doi.org/10.1594/PANGAEA.804763 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Lesher, Charles E; Cashman, Katharine V; Mayfield, J D (1999): Kinetic controls on crystallization of Tertiary North Atlantic basalt and implications for the emplacement and cooling history of lava at Site 989, Southeast Greenland rifted margin. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-14, https://doi.org/10.2973/odp.proc.sr.163.115.1999 163-989B Augite Cooling rate DRILL Drilling/drill rig DSDP/ODP/IODP sample designation EXP Experiment Greenland Sea Joides Resolution Leg163 Mineral assemblage Ocean Drilling Program ODP Olivine Plagioclase Run Number Sample code/label Temperature technical Time in minutes Volcanic glass dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.80476310.2973/odp.proc.sr.163.115.1999 2024-07-24T02:31:32Z Equilibrium melting and controlled cooling experiments were undertaken to constrain the crystallization and cooling histories of tholeiitic basalts recovered by the Ocean Drilling Program drilling of Site 989 on the Southeast Greenland continental margin. Isothermal experiments conducted at 1 atm. and at the fayalite-magnetite-quartz buffer using lava sample Section 163-989B-10R-7 yielded the equilibrium appearance sequence with decreasing temperature: olivine at 1184 ± 2ºC; plagioclase at 1177ºC ± 5ºC; augite at 1167 ± 5ºC; and pigeonite at 1113 ± 12ºC. In controlled cooling experiments using the same starting composition and cooling rates between 10ºC/hr and 2000ºC/hr, we find a significant temperature delay in the crystallization of olivine, plagioclase, and augite (relative to the equilibrium appearance temperature); pigeonite does not form under any dynamic crystallization conditions. Olivine exhibits the largest suppression in appearance temperature (e.g., 30º for 10ºC/hr and >190º at 100ºC/hr), while plagioclase shows the smallest (~10ºC at 10ºC/hr; 30ºC at 100ºC/hr, and ~80ºC at 1000ºC/hr). These results are in marked contrast to those obtained on lunar basalts, which generally show a large suppression of plagioclase crystallization and modest suppression of olivine crystallization with an increased cooling rate. The results we report agree well with the petrography of lavas recovered from Site 989. Furthermore, the textural analysis of run products, representing a large range of cooling rates and quench temperatures (1150ºC to 1000ºC), provide a framework for evaluating cooling conditions necessary for glass formation, rates of plagioclase growth, and kinetic factors governing plagioclase growth morphology. Specifically, we use these insights to interpret the textural and mineralogical features of the unusual compound flow recovered at Site 989. We concluded from the analysis that this flow most likely records multiple breakouts from a distal tube at an abrupt break in slope, possibly a fault scarp, ... Dataset Greenland Greenland Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-39.901900,-39.901900,63.522500,63.522500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
163-989B Augite Cooling rate DRILL Drilling/drill rig DSDP/ODP/IODP sample designation EXP Experiment Greenland Sea Joides Resolution Leg163 Mineral assemblage Ocean Drilling Program ODP Olivine Plagioclase Run Number Sample code/label Temperature technical Time in minutes Volcanic glass |
spellingShingle |
163-989B Augite Cooling rate DRILL Drilling/drill rig DSDP/ODP/IODP sample designation EXP Experiment Greenland Sea Joides Resolution Leg163 Mineral assemblage Ocean Drilling Program ODP Olivine Plagioclase Run Number Sample code/label Temperature technical Time in minutes Volcanic glass Lesher, Charles E Cashman, Katharine V Mayfield, J D (Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
topic_facet |
163-989B Augite Cooling rate DRILL Drilling/drill rig DSDP/ODP/IODP sample designation EXP Experiment Greenland Sea Joides Resolution Leg163 Mineral assemblage Ocean Drilling Program ODP Olivine Plagioclase Run Number Sample code/label Temperature technical Time in minutes Volcanic glass |
description |
Equilibrium melting and controlled cooling experiments were undertaken to constrain the crystallization and cooling histories of tholeiitic basalts recovered by the Ocean Drilling Program drilling of Site 989 on the Southeast Greenland continental margin. Isothermal experiments conducted at 1 atm. and at the fayalite-magnetite-quartz buffer using lava sample Section 163-989B-10R-7 yielded the equilibrium appearance sequence with decreasing temperature: olivine at 1184 ± 2ºC; plagioclase at 1177ºC ± 5ºC; augite at 1167 ± 5ºC; and pigeonite at 1113 ± 12ºC. In controlled cooling experiments using the same starting composition and cooling rates between 10ºC/hr and 2000ºC/hr, we find a significant temperature delay in the crystallization of olivine, plagioclase, and augite (relative to the equilibrium appearance temperature); pigeonite does not form under any dynamic crystallization conditions. Olivine exhibits the largest suppression in appearance temperature (e.g., 30º for 10ºC/hr and >190º at 100ºC/hr), while plagioclase shows the smallest (~10ºC at 10ºC/hr; 30ºC at 100ºC/hr, and ~80ºC at 1000ºC/hr). These results are in marked contrast to those obtained on lunar basalts, which generally show a large suppression of plagioclase crystallization and modest suppression of olivine crystallization with an increased cooling rate. The results we report agree well with the petrography of lavas recovered from Site 989. Furthermore, the textural analysis of run products, representing a large range of cooling rates and quench temperatures (1150ºC to 1000ºC), provide a framework for evaluating cooling conditions necessary for glass formation, rates of plagioclase growth, and kinetic factors governing plagioclase growth morphology. Specifically, we use these insights to interpret the textural and mineralogical features of the unusual compound flow recovered at Site 989. We concluded from the analysis that this flow most likely records multiple breakouts from a distal tube at an abrupt break in slope, possibly a fault scarp, ... |
format |
Dataset |
author |
Lesher, Charles E Cashman, Katharine V Mayfield, J D |
author_facet |
Lesher, Charles E Cashman, Katharine V Mayfield, J D |
author_sort |
Lesher, Charles E |
title |
(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
title_short |
(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
title_full |
(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
title_fullStr |
(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
title_full_unstemmed |
(Table 3) Run conditions and phase relations and proportions during cooling rate experiments on ODP Interval 163-989B-10R-7,55-59 |
title_sort |
(table 3) run conditions and phase relations and proportions during cooling rate experiments on odp interval 163-989b-10r-7,55-59 |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.804763 https://doi.org/10.1594/PANGAEA.804763 |
op_coverage |
LATITUDE: 63.522500 * LONGITUDE: -39.901900 * DATE/TIME START: 1995-09-17T18:00:00 * DATE/TIME END: 1995-09-20T13:30:00 * MINIMUM ELEVATION: -459.5 m * MAXIMUM ELEVATION: -459.5 m |
long_lat |
ENVELOPE(-39.901900,-39.901900,63.522500,63.522500) |
genre |
Greenland Greenland Sea |
genre_facet |
Greenland Greenland Sea |
op_source |
Supplement to: Lesher, Charles E; Cashman, Katharine V; Mayfield, J D (1999): Kinetic controls on crystallization of Tertiary North Atlantic basalt and implications for the emplacement and cooling history of lava at Site 989, Southeast Greenland rifted margin. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-14, https://doi.org/10.2973/odp.proc.sr.163.115.1999 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.804763 https://doi.org/10.1594/PANGAEA.804763 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80476310.2973/odp.proc.sr.163.115.1999 |
_version_ |
1810447394542714880 |