Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Leslie Gulch, Malheur Co., Oregon, USA

Oldest recorded age at locality: 16.15
Youngest recorded age at locality: 15.59

mindat Locality ID: 149944
mindat URL: http://www.mindat.org/loc-149944.html

Tectonic Settings:

Total number of sublocalities beneath "Leslie Gulch, Malheur Co., Oregon, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 43°20'24"N
Longitude: 117°8'1"W
Decimal Degree (lat, lon): 43.34,-117.13361111111

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

No IMA Minerals occur at this locality according to mindat

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_790	See Table 2. "Tuff of Leslie Gulch". Unit Type described as "Outflow Tuff", of the Rooster Comb Caldera. "The Tuff of Leslie Gulch is a sparsely porphyritic, weakly peralkaline, alkali rhyolite containing phenocrysts of sodic sanidine and sparse quartz and oxidized mafic phases."
Michelle_797	See Table 2. "Perlitic intrusion exposed in Leslie Gulch".

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Michelle_790	15.89	15.79	15.84±0.05	Ar-Ar	Age of tuff			TB-109						149944	Leslie Gulch, Malheur Co., Oregon, USA	Leslie Gulch	Benson and Mahood (2016)	10.1016/j.jvolgeores.2015.11.011	JVGR309_96	Age of "Tuff of Leslie Gulch"
	Michelle_797	16.15	15.59	15.87±0.28	Ar-Ar	Age of intrusion		sanidine	TB-185			Sanidine			149944	Leslie Gulch, Malheur Co., Oregon, USA	Perlitic Intrusion	Benson and Mahood (2016)	10.1016/j.jvolgeores.2015.11.011	JVGR309_96	Age of "Perlitic intrusion" in Leslie Gulch

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...