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Bridge Point, Otago Region, New Zealandi
Regional Level Types
Bridge PointVolcanic Center (Extinct)
Otago RegionRegion
New ZealandCountry

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PhotosMapsSearch
00091930017272421735676.jpg
Manganese Oxides, etc.

Bridge Point, Otago Region, New Zealand
05819500017272039495825.jpg
Palagonite, etc.

Bridge Point, Otago Region, New Zealand
09949130017718873675552.jpg
Garnet Group

Bridge Point, Otago Region, New Zealand
00091930017272421735676.jpg
Manganese Oxides, etc.

Bridge Point, Otago Region, New Zealand
08759670017271987596687.jpg
Palagonite, etc.

Bridge Point, Otago Region, New Zealand
07496110017719993923561.jpg
Garnet Group

Bridge Point, Otago Region, New Zealand
00091930017272421735676.jpg
Manganese Oxides, etc.

Bridge Point, Otago Region, New Zealand
05181340017271987618105.jpg
Palagonite, etc.

Bridge Point, Otago Region, New Zealand
Latitude & Longitude (WGS84):
45° 13' 12'' South , 170° 52' 58'' East
Latitude & Longitude (decimal):
-45.22020,170.88278
GRN:
S31E87
Type:
Volcanic Center (Extinct) - last checked 2021
Age:
39.5 to 34.3 Ma
Geologic Time:
Eocene
Dating method:
Ar/Ar
Reference for age:
M. J. Boyland. PALAEOENVIRONMENTAL RELATIONSHIPS OF MID-CENOZOIC CARBONATE AND VOLCANIC ROCKS, KAKANUI. Unpub MSc Thesis, Univ of Canterbury.
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
417360
Long-form identifier:
mindat:1:2:417360:4
GUID (UUID V4):
0
Other/historical names associated with this locality:
Aorere Point


"Surtla, a wholly submarine satellite volcanic centre of the 1963 1967 eruptive activity of Surtsey, is an excellent modern analogue for both the eruptive and post-eruptive phases of the Bridge Point-Aorere Point volcanic centre. By analogy with Surtla, the 120 metres of lapilli tuffs and lapillistones exposed on Bridge Point and Aorere Point accumulated in only several days. The 25 metres of reworked, glauconitic and fossiliferous volcaniclastics, represent thousands of years based on the time required for glauconite to form." (Cas, et al, 1989).

The upper section of the exposure consists of about 25m of epiclastic, redeposited volcanic clasts and tuff, lime mud, some glauconite, and a wide assortment of invertebrate fossils.

A well illustrated and self guided field trip to the Bridge Point Mineral Breccia is available via the following reference.
White, J.D.L, Hicks, S. (2009). Waiareka-Deborah Volcanics – volcanoes of the Paleogene shelf. In: Turnbull, I.M. (ed.). Field Trip Guides, Geosciences 09 Conference, Oamaru, New Zealand. Geological Society of New Zealand Miscellaneous Publication 128B. 13 p.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ 'Garronite Subgroup'
ⓘ 'Glass'
ⓘ 'Glauconite'
Formula: K0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ 'Limonite'
ⓘ 'Manganese Oxides'
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ 'Palagonite'
ⓘ 'Phillipsite Subgroup'
Formula: (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum7.CD.40CaSO4 · 2H2O
Unclassified
ⓘ'Glauconite'-K0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
ⓘ'Limonite'-
ⓘ'Phillipsite Subgroup'-(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
ⓘ'Glass'-
ⓘ'Manganese Oxides'-
ⓘ'Garronite Subgroup'-
ⓘ'Palagonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Hⓘ GoethiteFe3+O(OH)
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ OpalSiO2 · nH2O
Hⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Oⓘ GoethiteFe3+O(OH)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ OpalSiO2 · nH2O
Oⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
NaSodium
Naⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
MgMagnesium
Mgⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
AlAluminium
Alⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Alⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
SiSilicon
Siⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Siⓘ OpalSiO2 · nH2O
Siⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
SSulfur
Sⓘ GypsumCaSO4 · 2H2O
KPotassium
Kⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Kⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
FeIron
Feⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Feⓘ GoethiteFe3+O(OH)
BaBarium
Baⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O

Other Regions, Features and Areas containing this locality

Australian Plate
New Zealand
Pacific PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]Cas, R.A.F., Landis, C.A., Fordyce, R.E. (1989) A monogenetic, Surtla-type, Surtseyan volcano from the Eocene-Oligocene Waiareka-Deborah volcanics, Otago, New Zealand: a model. Bulletin of Volcanology, 51: 281-298.
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