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Record W1985270927 · doi:10.1306/060100710190

"Geyser Eggs" from Te Whakarewarewatangaoteopetauaawahiao, North Island, New Zealand

2001· article· en· W1985270927 on OpenAlexafffund
Brian Jones, Michael R. Rosen, Robin W. Renaut

Bibliographic record

VenueJournal of Sedimentary Research · 2001
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeology and Paleoclimatology Research
Canadian institutionsUniversity of SaskatchewanUniversity of Alberta
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsGeologyOceanographySeismologyPaleontology

Abstract

fetched live from OpenAlex

Abstract Waikorohihi and Mahanga, two geysers located on Geyser Flat at Te Whakarewarewatangaoteopetauaawahiao, New Zealand, discharge chloride waters with a pH of 8.5-9.25 at 100°C. Many large (up to 10 × 8 × 5 cm) coated grains composed of amorphous silica (opal-A), that are informally termed "geyser eggs", surround the vent of Waikorohihi, whereas smaller (< 3 cm) geyser eggs are present in the proximal outflow channel of Mahanga. The geyser eggs have nuclei of detrital sinter or rhyolitic tuff. Their cortices are formed of thin concentric laminae and (or) spicular geyserite. Most cortical laminae contain a low-diversity biota that includes filamentous microbes (three types) and scattered spherical microbes. Silicified grains of Pinus radiata pollen are common in some laminae. Multiple phases of silica encrustation around the filamentous microbes disguised most features that are needed to confidently identify them. Most filaments are probably cyanobacteria. Variations in the microporosity and (or) microbe concentrations define individual cortical laminae. Growth of the geyser eggs in the pool around Waikorohihi vent was controlled by the eruptive behavior of the geyser. The eggs are submerged by boiling water during eruptions. During dormant phases, the geyser eggs are subaerially exposed. While exposed, their surfaces may remain moist from steam or rainwater, or they may desiccate. The low microbial diversity in the geyser eggs is probably related to their periodic inundation by boiling water and the highly variable conditions. The abundant microbial laminae in the geyser eggs confirm that microbial templates are found in siliceous coated grains from almost all environmental settings in siliceous thermal-spring systems.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.042
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.002
Insufficient payload (model declined to judge)0.0230.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.051
GPT teacher head0.320
Teacher spread0.269 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations27
Published2001
Admission routes2
Has abstractyes

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