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**Peter Riley** @peterjriley2024@mastodon.social · Jan 27 *

Jan 27 *

Peter Riley @peterjriley2024@mastodon.social

#Hakea belongs to the ancient plant family #Proteaceae, which split into two subfamilies, #Grevilleoideae in #Australia and #Proteoideae in #southafrica before the separation of the #Gondwanaland continent around 140 million years ago.

*Image by Corynocarpus CC BY-SA 4.0

Proteaceae
https://en.wikipedia.org/wiki/Proteaceae

Grevilleoideae
https://en.wikipedia.org/wiki/Grevilleoideae

Proteoideae
https://en.wikipedia.org/wiki/Proteoideae

Gondwana
https://en.wikipedia.org/wiki/Gondwana

Hakea belongs to the ancient plant family Proteaceae, which split into two subfamilies, Grevilleoideae in Australia and Proteoideae in South Africa, before the separation of the Gondwanaland continent around 140 million years ago.

*Image by Corynocarpus CC BY-SA 4.0

A narrow, medium shrub up to 2.5 metres high by about a 1-metre spread. The stem-clasping leaves are stiff, concave, about 200 mm long and 120 mm wide and variegated in a range of colours from cream, yellow, orange and red, changing colour with the seasons. The leaves have prickly teeth around the margins. The inconspicuous flowers are creamy-white or yellow and occur in the leaf axils in spring Western Australia.

#BloomScrolling

**Greg Cocks** @GregCocks@techhub.social · Dec 30, 2024

Dec 30, 2024

Greg Cocks @GregCocks@techhub.social

These Revolutionary Maps Are Revealing Earth’s Geological Secrets
--
https://www.zmescience.com/science/tectonic-model-beatiful-new/ <-- shared technical article
--
https://doi.org/10.1016/j.earscirev.2022.104069 <-- shared paper
--
#GIS #spatial #mapping #tomography #geology #remotesensing #structuralgeology #plates #platetectonics #earth #global #model #modeling #opendata #opensource #spatialdata #vector #platemodel #mechanics #GPS #earthquakes #volcanoes #topography #orogeny #tectonics #spatiotemporal #spatialanalysis #Pangea #Gondwana #Gondwanaland #ReuniteGondwanaland #Laurasia #lithosphere #crust #mantle #core #geophysics #geochemistry #geochronology #dating #Mesoproterozoic

map - tectonic plates and geologic processes

map - Models of the Capricorn Plate and associated Mid-Indian deformation zone.

map - Magnetic anomaly map of southern Africa overlaying topographic relief. The WDMAM_V2 magnetic model has a pixel size of 1.5 minutes, which is approximately 2.8 km at the equator. The model is created from shiptrack, airborne and satellite datasets resulting in variable resolution that is evident in this image and affects the accuracy of province boundaries.

maps - map of the last orogenic event to affect a province. The colors are approximately related to the age of the orogenic event. The points show locations of observed and estimated metamorphic ages

**SubtleBlade** @SubtleBlade@mastodon.scot · Feb 10, 2024

Feb 10, 2024

SubtleBlade @SubtleBlade@mastodon.scot

Sydney’s 90m-year-old climbing #galaxias fish may have been wiped out by school building works

The species can climb waterfalls and reaches back to #Gondwanaland – but there are fears #polluted runoff has proven fatal

https://www.theguardian.com/environment/2024/feb/11/sydney-climbing-galaxias-fish-extinction-fears

The Guardian · Feb 10, 2024Sydney’s 90m-year-old climbing galaxias fish may have been wiped out by school building worksBy Peter Hannam

**Greg Cocks** @GregCocks@techhub.social · Jan 30, 2024 *

Jan 30, 2024 *

Greg Cocks @GregCocks@techhub.social

Reconnaissance Basement Geology and Tectonics of South Zealandia
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https://doi.org/10.1029/2018TC005116 <-- shared paper
--
#GIS #spatial #mapping #geology #structuralgeology #geologicmapping #NewZealand #Zealandia #remotesensing #magnetic #reconnaissance #basement #tectonics #SouthZealandia #igneous #batholith #magneticanomaly #continent #seafloor #bathymetry #orogeny #gondwana ##gondwanaland #sampling #hikurangi #forearcbasin #forearc #boreholes #dredging #faulting #faults #gravity #seismic #seismology #renunitegondwanaland #geophysics

Geological map ~1:25 M scale showing offshore South Zealandia and the West Antarctic conjugate margin.

map / graphic - Topography of Zealandia, outlined in pink. The linear ridges running north-northeast (Colville to the west and Kermadec to the east, separated by the Havre Trough and Lau Basin) and southwest (the Resolution Ridge System) away from New Zealand are not considered part of Zealandia, nor are Australia (left), Vanuatu, or Fiji (top centre).

Seismic sections from locations in western South Zealandia.

**Lukas VFN** @animalculum@scholar.social · Nov 22, 2023

Nov 22, 2023

Lukas VFN @animalculum@scholar.social

Trilobites rise from the ashes to reveal ancient map
https://phys.org/news/2023-11-trilobites-ashes-reveal-ancient.html

#Trilobites of #Thailand's #Cambrian–#Ordovician Tarutao Group and their geological setting https://onlinelibrary.wiley.com/doi/10.1002/spp2.1516

"During the trilobites' lifetime, this region was on the outer margins of #Gondwanaland, an ancient #supercontinent that included Africa, India, Australia, South America, and Antarctica."