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- (inserted: 03.09.2024 08:29)
DIVE: 2024-09-03 ˇ
DIVE 5071_1_B borehole: broadband borehole seismometer has successfully resurfaced!
After sitting an entire year at ca. 250 m depth (which means: also below sea-level) in hole 5071_1_B near Ornavasso, the broadband borehole seismometer has successfully resurfaced! After some initial tension in the cable and at the winch, all went smoothly and the UNIL+INGV team left the site clean and tidy well before dinner. The rain gauge has recorded 1.6 m of precipitation in 9 months.
- (inserted: 23.04.2024 08:29)
DIVE: 2024-08-06 ˇ
Vertical Seismic Profiling at 5071_1_A borehole near Megolo
DIVE_1_A: Borehole logging in Megolo: The chain is in, two levels were shot today. All good so far. Except for the temperature is far too high.
- (inserted: 23.04.2024 08:29)
DIVE: 2024-04-23 ˇ
Cheers to the end of drilling at drill site DIVE_1A! Today the site DIVE-1A got busy, with a nice...
Cheers to the end of drilling at drill site DIVE_1A! Today the site DIVE-1A got busy, with a nice party organized by the drilling company and DIVE, together with local representatives. Meanwhile borehole logging is starting to produce nice results!
- (inserted: 12.04.2024 08:29)
DIVE: 2024-04-12 ˇ
Final depth has been reached at DT-1A! More than satisfactory lithological and structural...
Final depth has been reached at DT-1A! More than satisfactory lithological and structural variations, time constraints and some technical difficulties with the rig, contributed to the decision to stop the drilling at 909.5 meters. While the shipping of cores is being prepared, now on-site operations are all focused to prepare the borehole logging activities in the next weeks.
- (inserted: 27.03.2024 08:29)
DIVE: 2024-03-27 ˇ
Three more cores on deck today, with nice mylonites and pyroxenites. Site is now being prepared for...
Three more cores on deck today, with nice mylonites and pyroxenites. Site is now being prepared for the Easter break and important decisions are being discussed for the ending of the drilling!
- (inserted: 26.03.2024 08:29)
DIVE: 2024-03-26 ˇ
Diving to the deepest lower crust! Today the borehole reached 900 m, with new metagabbronorite and...
Diving to the deepest lower crust! Today the borehole reached 900 m, with new metagabbronorite and pyroxenite cores. A very nice goal reached just before the Easter holidays.
- (inserted: 25.03.2024 08:29)
DIVE: 2024-03-25 ˇ
An issue with the rig has been slowing down drilling in the last few days, but today a temporary...
An issue with the rig has been slowing down drilling in the last few days, but today a temporary solution has been found and new cores arrived on deck. Drilled depth is 882 meters!
- (inserted: 22.03.2024 08:29)
DIVE: 2024-03-21 ˇ
Other six beautiful cores on deck, last one from 873 m depth. Students from one more school visited...
Other six beautiful cores on deck, last one from 873 m depth. Students from one more school visited the site.
- (inserted: 22.03.2024 08:27)
DIVE: 2024-03-20 ˇ
Another six cores today, which allowed to arrive to 855m depth. Very nice crystal-rich fracture...
Another six cores today, which allowed to arrive to 855m depth. Very nice crystal-rich fracture zones make the cores even more attractive for the DIVE geologists and for the visitors of the day.
- (inserted: 22.03.2024 08:26)
DIVE: 2024-03-19 ˇ
Wonderful core....
Six nice and intact cores reached the deck today, after some fracture zone crossed yesterday. We are at 837 m depth. And after the shady winter of Megolo, the sunshine starts to hit the site!
- (inserted: 22.03.2024 08:25)
DIVE: 2024-03-15 ˇ
Back to good drilling rates today, crossing 800 meters and retrieving 6 more cores on deck! Nice...
Back to good drilling rates today, crossing 800 meters and retrieving 6 more cores on deck! Nice layers of pyroxenites in garnet-bearing metagabbros.
- (inserted: 22.03.2024 08:22)
DIVE: 2024-03-14 ˇ
Almost two silent weeks passed, because of a malfunctioning pump of the drill rig. The problem has...
Almost two silent weeks passed, because of a malfunctioning pump of the drill rig. The problem has been solved and today drilling started again. Three cores on deck, and surprise surprise a nice transition from metagabbronorites to pyroxenites arrived! Bottom depth is now 783 meters. Meanwhile happy students and scientists visited the site.
- (inserted: 29.02.2024 08:47)
DIVE: 2024-02-29 ˇ
DIVE: arriving at 770 m depth
A lot happened in the last few weeks. Many meters have been drilled, arriving to a bottom depth of 770 m. Some fracture zones were encountered and a lot of rods now need to be pulled at every drill bit change. But the intact cores keep showing new and variable structures and nice lithological transitions!
- (inserted: 22.02.2024 08:47)
DIVE: 2024-02-22 ˇ
DIVE: passing 700 m depth
After rods had to be pull out because of drill-bit consuption a couple of days ago, DIVE 5071-1A now passed 700 m depth.
- (inserted: 16.02.2024 08:47)
DIVE: 2024-02-16 ˇ
DIVE: recovering intriguing ultramafic rocks
After getting to a bottom depth of 680 meters and recovering intriguing ultramafic rocks, rods had to be pull out because of drill-bit consuption. Meanwhile life on site is quite active, with visits from the local authorities and DIVE scientists planning for the next steps.
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Newer Extension news, for comparison (1 DIVE newsitem)
DIVE: 2022-10-22 (alternative)
A bigger rig has arrived. (The Read More button does not work yet)