Two excellent things worth commenting on here. 1. The information and general quality of the video. 2. That outstanding jumper you sometimes sport. Keep it up!!
Having watched Geldingadir/Fagradalsfjal/Sundhnukar erupting over the recent years, I imagine it would have looked a bit like that (without the long fissures). Fascinating to think it could happen in Northland (again).
Request: Get Bruce to do a tour and explanation of the McCallum island and red rock quarry. Hopefully if you get in touch with them they'd assist in getting yiu there and allow it. The 3 sons that operate it now are the sons of John and Shirley who were friends of dad. RIP all 3.
Yeah, that would be interesting. My dad worked on the island in the mid sixties and has been a connection through my life though I have never been there. Should make a very interesting video with connection to the inner Hauraki gulf and old rocks etc. Maybe with a counterpoint comparison to Kawau island / Tawharanui and the greywackes on the east generally?
@@murrayvryer5994 Red driveways throughout Auckland source their colour from that island :-D The first home I remember living in had one such driveway - though it was undercut by the floods a year or two ago. Hopefully it is kept and reinforced, not replaced.
Thank you again Bruce, for these excellent and informative tutorial videos, and for sharing your extensive knowledge. We can learn so much about areas we visit and live close to in Aotearoa. It's great to be looking through eyes with some knowledge thanks to watching and listening. Ngā mihi
We never see or hear about Maugarahu, Tokatoka, Tinopai or Parakai, This too is an interesting volcanic area. The caldera at Tinopai is quite large and it would be great if there was some information about these places.
Excellent camera work, factual informative commentary; easy to listen to and view. I've lived in the Bay of Islands since 1975 and I learned much I didn't know before from the video. My compliments!
Just to say I enjoy these videos so much & thank you. I wish I'd taken a different course of interests when I was a young fella after seeing these. I'd love to see you do a piece on the ancient Lake Manuherikia if you are ever down south.
This video made me think of the summer holidays I spent at Taupo Bay. We would often climb Turtle Mountain for the exercise, and the view towards PekaPeka Bay.
Ah, finally a place I've actually been! The incredibly green cinder cones around the rural landscape are truly stunning, though I do wish there was more forest as I'm sure it would have been truly impressive given the rich soils and mild climate. Around Mahinepua there's also some of what appear to be lava flows that reached the sea, though these might be some allocthon terrane (not really sure, it could reasonably be either one). Northern NZ is really underrated for its geology and landscapes.
Thanks for the great video! I had hoped in comments on an earlier video that you might get to do one up here. We live on the upper slopes of what your map shows as Haruru. (but probably is a different iteration of Hariru that it is identified as by my witness, though also known as Maungakawakawa) characterized by what would seem to be a rafting event that has carried away a large side of the original scoria cone?? For those that are not familiar with the area, we have a geothermal power station at Ngawha showing its still warm down there. I remember the test bore venting back in the early 1980's that could be seen 30kms away that ran for months to prove the field.
Haruru is the spelling on the official LINZ maps, but I know of both your other two names for it - we need local iwi to confirm correct/best name for it. Sad about the quarrying on one side.
Yes very familiar to most of us in those earlier years. And the winning of the rock, and transporting it by barge quite a history that deserves a video all its own too. I think quarrying was happening below sea level even in my dad's time. My dad later was an owner operator truckie and I remember occasions being in the line at Birkenhead wharf taking loads of the red stuff as they unloaded the barge with a clamshell dragline type machine. Fond memories. I think there are other islands with the red rock too. Possibly where it's sourced today??
Is there any way to get a tighter estimate as to when the Kerikeri eruptions with lower sea level occurred? Could it have been more like 45 thousand years ago or is there no way to tell for sure? Thanks!
There's a pdf you can readily access through a google search. It's a report by Phil Shane on what might be the most up to date dating on Northlands volcanic fields including Whangarei, our district and Kaipara.though as Bruce alluded, there has not been much work done in this area and this report may be all there is currently. I would be interested if there is more than this available..
thankyou for your piece on lake omapere it is a fascinating lake with a ratio of fresh water and geothermal that runs thru to ngawha and the mineral springs there. this lake up to the year 2000 housed the isoetes kirkii a water fern that is near extinction n the remaining plants 16 i think left in the world are looked after by environmental scientists to try and propagate and return hopefully back to the lake one day. thankyou for your videos they are excellent
Great video! Another two volcanoes I'd like to see covered in this series of videos - Mt Tauhara and Mt Edgecumbe ( Putauaki ). I've often wondered if Mt Tauhara has a crater - maybe someone can answer that for me.
Tauhara is a rhyolite/dacite dome, like Tarawera, so no it doesn't have a crater. typically (unless busted open by rifting) domes grow from the inside out, shedding their outer layers like onions :)
You have the scale wrong in your head sorry. The places named are in the correct position. Kerikeri is located just off the map to the north and Kawakawa to the SE.
Can you get Bruce the legend himself to please go re visit the stony batter boulders on Waiheke island? I am interested in why these boulders are similar to the Wairere ones as I want to climb there soon.
can people go fishing there? i bet all those rocks are fantastic structure for fish hides. Down on the Texas coast is mostly sandy bottoms aside from grass marshes. Most of our rock structure is man made bridges and or rock jetties. They say always try to fish next to structures!
yes they fish and collect shellfood out along the coast but still gota be weary the human waste sometimes overlows causing issues in the streams n estuaries from the treatment plant in haruru/Paihia
These videos are so good.
Thank you!
Best NZ youtube channel :)
Agreed.
Thanks for your affirmation!
Seconded!
Yep, sure is. Good old school proper teaching.
agreed!
Two excellent things worth commenting on here. 1. The information and general quality of the video. 2. That outstanding jumper you sometimes sport. Keep it up!!
😀
Please share longer videos, please!!!
Thank you for the work you're already doing!!
Excellent, very interesting history and explanation. Nice landscape.
Cheers!
Excellent video thank you. Greeyings from Auckland 🙋🏼♀️🇳🇿
Thanks! Greetings back
Yay Pouerua is my Maunga - got a bit teary seeing the landscape - wonderful explanation thank you
Thanks for our appreciation!
Having watched Geldingadir/Fagradalsfjal/Sundhnukar erupting over the recent years, I imagine it would have looked a bit like that (without the long fissures). Fascinating to think it could happen in Northland (again).
Fragradalsfjall features at 2:56 in the video ;)
Very informative thank you
Request: Get Bruce to do a tour and explanation of the McCallum island and red rock quarry. Hopefully if you get in touch with them they'd assist in getting yiu there and allow it. The 3 sons that operate it now are the sons of John and Shirley who were friends of dad. RIP all 3.
Red Rock Q, Wairarapa?
Yeah, that would be interesting. My dad worked on the island in the mid sixties and has been a connection through my life though I have never been there. Should make a very interesting video with connection to the inner Hauraki gulf and old rocks etc. Maybe with a counterpoint comparison to Kawau island / Tawharanui and the greywackes on the east generally?
@@murrayvryer5994 Red driveways throughout Auckland source their colour from that island :-D The first home I remember living in had one such driveway - though it was undercut by the floods a year or two ago. Hopefully it is kept and reinforced, not replaced.
Thank you again Bruce, for these excellent and informative tutorial videos, and for sharing your extensive knowledge. We can learn so much about areas we visit and live close to in Aotearoa. It's great to be looking through eyes with some knowledge thanks to watching and listening. Ngā mihi
We never see or hear about Maugarahu, Tokatoka, Tinopai or Parakai, This too is an interesting volcanic area. The caldera at Tinopai is quite large and it would be great if there was some information about these places.
Here is Maungarahu and Tokatoka: ua-cam.com/video/UR_O1qOCTeE/v-deo.html
Superb presentation
Cheers!
Thanks again Bruce for this mint content. You are so good at putting the whole story together with the landscape.
Excellent camera work, factual informative commentary; easy to listen to and view. I've lived in the Bay of Islands since 1975 and I learned much I didn't know before from the video. My compliments!
Thanks!
another gem! I'm planning on re watching so I can absorb properly, thank you
Thanks - yes there is a lot of info in there!
Love this keep them coming and thank you for such interesting insights into Aotearoa geological history
Just to say I enjoy these videos so much & thank you.
I wish I'd taken a different course of interests when I was a young fella after seeing these.
I'd love to see you do a piece on the ancient Lake Manuherikia if you are ever down south.
Thank you - will remember that suggestion
Another fantastic video from my favorite channel youtube ❤
Thanks, appreciated
This video made me think of the summer holidays I spent at Taupo Bay. We would often climb Turtle Mountain for the exercise, and the view towards PekaPeka Bay.
Sounds like good memories
Thanks for your great work. I love getting an insight into our geological history.
Thanks for watching!
Always fascinating. Thank you.
Cheers!
Thank you for these videos and explanations. 🌟🌿🌟
@@kathryntaylor4788 cheers!
Thank you, great work
Cheers!
@@OutThereLearning love it, eye opening. It makes more appreciation for our tiny little corner of the world
Nice. We farmed on the edge of Lake Omapere, and looked out on these volcanos.
@@ninaandbob I'm between foxes farm and okaihau pastarol✌️
Thanks for sharing - that's great!
Another excellent video.😊
Glad you enjoyed it
Ah, finally a place I've actually been! The incredibly green cinder cones around the rural landscape are truly stunning, though I do wish there was more forest as I'm sure it would have been truly impressive given the rich soils and mild climate. Around Mahinepua there's also some of what appear to be lava flows that reached the sea, though these might be some allocthon terrane (not really sure, it could reasonably be either one). Northern NZ is really underrated for its geology and landscapes.
It really is!
Yes well observed. Flat Island is the eroded remnant of one of the longer and older basalt flows from this volcanic field.
Thanks. Do you have an explanation on the formation of the black rock's?
Yes the eroded end of a long and older (2-3 million year old) basalt lava flow that came down the Kerikeri Valley when sea level was lower.
Another excellent video
Thank you
Fantastic thank you.
Our pleasure!
Great stuff, thanks
Cheers!
Thankful indeed knowledgeable very interesting indeed 🙏🏻💛
Glad you enjoyed it
Fantastic!
Cheers!
SO VERY GOOD .
Thank you!
Would rainbow falls in Waipapa be what remains of the leading edge of one of these ancient lava flows?
Yes, Rainbow Falls features in the video and is the eroded edge of one of the 2-3 million year old flows.
I live before okaihau I look at these volcanoes every day I live beside lake Omapere❤❤❤❤❤
Nice!
Thanks for the great video! I had hoped in comments on an earlier video that you might get to do one up here. We live on the upper slopes of what your map shows as Haruru. (but probably is a different iteration of Hariru that it is identified as by my witness, though also known as Maungakawakawa) characterized by what would seem to be a rafting event that has carried away a large side of the original scoria cone?? For those that are not familiar with the area, we have a geothermal power station at Ngawha showing its still warm down there. I remember the test bore venting back in the early 1980's that could be seen 30kms away that ran for months to prove the field.
Thanks for your comment!
Haruru is the spelling on the official LINZ maps, but I know of both your other two names for it - we need local iwi to confirm correct/best name for it. Sad about the quarrying on one side.
Yes very familiar to most of us in those earlier years. And the winning of the rock, and transporting it by barge quite a history that deserves a video all its own too. I think quarrying was happening below sea level even in my dad's time. My dad later was an owner operator truckie and I remember occasions being in the line at Birkenhead wharf taking loads of the red stuff as they unloaded the barge with a clamshell dragline type machine. Fond memories. I think there are other islands with the red rock too. Possibly where it's sourced today??
Thanks for sharing!
Is there any way to get a tighter estimate as to when the Kerikeri eruptions with lower sea level occurred? Could it have been more like 45 thousand years ago or is there no way to tell for sure? Thanks!
There's a pdf you can readily access through a google search. It's a report by Phil Shane on what might be the most up to date dating on Northlands volcanic fields including Whangarei, our district and Kaipara.though as Bruce alluded, there has not been much work done in this area and this report may be all there is currently. I would be interested if there is more than this available..
@@murrayvryer5994 Thanks so much Murray, shall search that out. Really appreciate your help. Many Thanks!!
thankyou for your piece on lake omapere it is a fascinating lake with a ratio of fresh water and geothermal that runs thru to ngawha and the mineral springs there. this lake up to the year 2000 housed the isoetes kirkii a water fern that is near extinction n the remaining plants 16 i think left in the world are looked after by environmental scientists to try and propagate and return hopefully back to the lake one day. thankyou for your videos they are excellent
Great video!
Another two volcanoes I'd like to see covered in this series of videos - Mt Tauhara and Mt Edgecumbe ( Putauaki ).
I've often wondered if Mt Tauhara has a crater - maybe someone can answer that for me.
Tauhara is a rhyolite/dacite dome, like Tarawera, so no it doesn't have a crater. typically (unless busted open by rifting) domes grow from the inside out, shedding their outer layers like onions :)
@@jforce91 - Ok - thanks for that, jforce91!
I think your map shows Kaikohe where Kerikeri/Kawakawa is.
Thanks for mentioning
You have the scale wrong in your head sorry. The places named are in the correct position. Kerikeri is located just off the map to the north and Kawakawa to the SE.
The mount camal, whangaroa and tangihuas are alot older, kaeo is a fascinating area for many many reasons,
Tangihua is an allochthon, I.E. a "rootless" volcano that "slid" to where it is now.
What was the driver of this type of magma from depth?
Can you get Bruce the legend himself to please go re visit the stony batter boulders on Waiheke island? I am interested in why these boulders are similar to the Wairere ones as I want to climb there soon.
Good idea for a future trip!
Very similar to the Victorian (Australia) newer volcanics region where I'm from. Very interesting!
Thanks for that info
yes, the Newer Volcanoes erupted in teh same way over a similar time period.
Shame 'slip me a koha' Jones: "Fast track those for the criticals cuz"! RIP Freddy.
Ohaeawai and Taiamai....
Awesome! So I guess the black rocks in the water of BOI are from these? Very different compared to the whole area really.
They eroded and partly drowned remnants of one of the older flows that came down Kerikeri Valley.
I understand Auckland is sitting on approx seven old volcanoes. I don’t know Auckland . Jaffas live there .
Closer to 57! (Which is a slight exaggeration.) Current thought is 53.
Any obsidian found in these areas
A little associated with the rhyolitic/dacitic domes.
ticking time bomb Tuhua
can people go fishing there? i bet all those rocks are fantastic structure for fish hides. Down on the Texas coast is mostly sandy bottoms aside from grass marshes. Most of our rock structure is man made bridges and or rock jetties. They say always try to fish next to structures!
yes they fish and collect shellfood out along the coast but still gota be weary the human waste sometimes overlows causing issues in the streams n estuaries from the treatment plant in haruru/Paihia