Bridge Point, Waitaki District, Otago Region, New Zealandi
| Regional Level Types | |
|---|---|
| Bridge Point | Volcanic Center (Extinct) |
| Waitaki District | District |
| Otago Region | Region |
| New Zealand | Country |
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Latitude & Longitude (WGS84):
45° 13' 12'' South , 170° 52' 58'' East
Latitude & Longitude (decimal):
Locality type:
Volcanic Center (Extinct) - last checked 2021
Age:
39.5 to 34.3 Ma
Geologic Time:
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:
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.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral 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 DiagramDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 Reference: Collection of RJ Martin correlated to similar exposures in the Kakanui Mineral Breccia |
| ⓘ 'Garronite' Reference: Cas RAF, Landis CA (1987) A debris-flow deposit with multiple plug-flow channels and associated side accretion deposits. Sedimentology 34:901–910 |
| ⓘ 'Glass' Reference: Cas RAF, Landis CA (1987) A debris-flow deposit with multiple plug-flow channels and associated side accretion deposits. Sedimentology 34:901–910 |
| ⓘ 'Glauconite' Formula: (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 Reference: Cas, R.A.F., Landis, C.A. and 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- |
| ⓘ Goethite Formula: α-Fe3+O(OH) Reference: Collection of RJ Martin |
| ⓘ Gypsum Formula: CaSO4 · 2H2O Reference: Collection of RJ Martin |
| ⓘ 'Limonite' Reference: Collection of RJ Martin |
| ⓘ 'Manganese Oxides' Reference: Collection of RJ Martin correlated to similar exposures in the Kakanui Mineral Breccia |
| ⓘ Opal Formula: SiO2 · nH2O Reference: Collection of RJ Martin |
| ⓘ 'Palagonite' Reference: Cas RAF, Landis CA (1987) A debris-flow deposit with multiple plug-flow channels and associated side accretion deposits. Sedimentology 34:901–910 |
| ⓘ 'Phillipsite Subgroup' Reference: Collection of RJ Martin correlated to similar exposures in the Kakanui Mineral Breccia |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| Group 9 - Silicates | |||
| ⓘ | 'Glauconite' | 9.EC. | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Garronite' | - | |
| ⓘ | 'Glass' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Manganese Oxides' | - | |
| ⓘ | 'Palagonite' | - | |
| ⓘ | 'Phillipsite Subgroup' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| H | ⓘ Goethite | α-Fe3+O(OH) |
| H | ⓘ Opal | SiO2 · nH2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Goethite | α-Fe3+O(OH) |
| O | ⓘ Opal | SiO2 · nH2O |
| Na | Sodium | |
| Na | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Si | ⓘ Opal | SiO2 · nH2O |
| S | Sulfur | |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| K | Potassium | |
| K | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Glauconite | (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2 |
| Fe | ⓘ Goethite | α-Fe3+O(OH) |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A) In-text Citation No.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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Bridge Point, Waitaki District, Otago Region, New Zealand