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Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarcticai
Regional Level Types
Executive Committee RangeMountain Range
Marie Byrd LandArea
Western AntarcticaRegion
AntarcticaContinent

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Latitude & Longitude (WGS84):
76° 49' 59'' South , 126° 5' 59'' West
Latitude & Longitude (decimal):
-76.83333,-126.10000
GeoHash:
G#: 14q6fsbv3
GRN:
S52W23
Type:
Mountain Range
Köppen climate type:
EF : Ice cap climate
Mindat Locality ID:
279299
Long-form identifier:
mindat:1:2:279299:9
GUID (UUID V4):
0


The Executive Committee Range is a mountain range consisting of five major volcanoes, which trends north-south for 80 km (50 mi) along the 126th meridian west, in Marie Byrd Land, Antarctica.

Discovered by the United States Antarctic Service expedition on a flight, December 15, 1940, and named for the Antarctic Service Executive Committee. Individual mountains (e.g. Hampton, Waesche) are named in honor of members of the committee, except for Mount Sidley, the most imposing mountain in the range, which was discovered and named by Rear Admiral Byrd in 1934. The entire range was mapped in detail by USGS from surveys and U.S. Navy trimetrogon photography, 1958-60.

Mountains of this range include Mount Sidley, Mount Waesche and Mount Hampton.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

16 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
ⓘ Albite var. Anorthoclase
Formula: (Na,K)AlSi3O8
ⓘ 'Alkali Feldspar'
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Arfvedsonite
Formula: [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Augite var. Titanium-bearing Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘ 'Clinopyroxene Subgroup'
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Fayalite
Formula: Fe2+2SiO4
ⓘ 'Fayalite-Forsterite Series'
ⓘ Forsterite
Formula: Mg2SiO4
ⓘ 'Glass'
ⓘ Hedenbergite
Formula: CaFe2+Si2O6
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Kaersutite
Formula: NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ Rhönite
Formula: Ca4[Mg8Fe3+2Ti2]O4[Si6Al6O36]
Description: Destabilization of kaersutite.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Titanium-bearing Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2SiO4
ⓘForsterite9.AC.05Mg2SiO4
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘHedenbergite9.DA.15CaFe2+Si2O6
ⓘAugite
var. Titanium-bearing Augite		9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘKaersutite9.DE.15NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘArfvedsonite9.DE.25[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
ⓘRhönite9.DH.40Ca4[Mg8Fe3+2Ti2]O4[Si6Al6O36]
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘAlbite
var. Anorthoclase		9.FA.35(Na,K)AlSi3O8
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Alkali Feldspar'-
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Glass'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Oⓘ Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ DiopsideCaMgSi2O6
Oⓘ FayaliteFe22+SiO4
Oⓘ ForsteriteMg2SiO4
Oⓘ HedenbergiteCaFe2+Si2O6
Oⓘ IlmeniteFe2+TiO3
Oⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Oⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Oⓘ Fayalite-Forsterite Series
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Naⓘ Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Naⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Naⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ ForsteriteMg2SiO4
Mgⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Alⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Siⓘ Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ DiopsideCaMgSi2O6
Siⓘ FayaliteFe22+SiO4
Siⓘ ForsteriteMg2SiO4
Siⓘ HedenbergiteCaFe2+Si2O6
Siⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Siⓘ Fayalite-Forsterite Series
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ DiopsideCaMgSi2O6
Caⓘ HedenbergiteCaFe2+Si2O6
Caⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Caⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Tiⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Tiⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Tiⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Feⓘ Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ FayaliteFe22+SiO4
Feⓘ HedenbergiteCaFe2+Si2O6
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ RhöniteCa4[Mg8Fe23+Ti2]O4[Si6Al6O36]
Feⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Feⓘ Fayalite-Forsterite Series
Feⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6

Geochronology

Mineralization age: Cenozoic : 13.7 ± 0.5 Ma to 0.1 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Quaternary
   Pleistocene
ⓘ Hawaiite (youngest age)0.1 MaMount Waesche and Chang Peak, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
ⓘ Hawaiite (oldest age)1.0 ± 0.1 MaMount Waesche and Chang Peak, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
ⓘ Comenditic rhyolite (youngest age)1.6 ± 0.2 MaMount Waesche and Chang Peak, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
  Neogene
   Pliocene
ⓘ Basanite (youngest age)3.0 ± 0.2 MaMount Cumming, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
   Miocene
ⓘ Basanite (oldest age)5.68 ± 0.06 MaMount Sidley, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
ⓘ Comenditic rhyolite (oldest age)8.50 ± 0.33 MaMount Hartigan, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
ⓘ Trachyte (youngest age)8.6 ± 0.5 MaMount Hampton, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica
ⓘ Trachyte (oldest age)13.7 ± 0.5 MaMount Hampton, Executive Committee Range, Marie Byrd Land, Western Antarctica, Antarctica

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Executive_Committee_Range
Wikidata ID:Q3544493

Localities in this Region

Antarctica

Other Regions, Features and Areas containing this locality

Antarctic MeteoritesGroup of Meteorite Fall Locations
Antarctic PlateTectonic Plate

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