Exp. 369 Australia Cretaceous Climate and Tectonics




Australia Cretaceous Climate and Tectonics


Scientific Prospectus>>こちら

Preliminary Report>>こちら





JOIDES Resolution


Hobart to Fremantle, Australia





The Australia Cretaceous Climate and Tectonics Expedition (based on IODP Proposal 760 Full) aims to understand the paleoceanography and tectonics of the Naturaliste Plateau (NP) and Mentelle Basin (MB) off SW Australia.

Core and log data from a series of sites in water depths between 850 and 3900 m will investigate: (1) The rise and collapse of the Cretaceous hothouse; (2) the controls on oceanic anoxic events during major carbon cycle perturbations; (3) Cretaceous paleoceanography including deep and intermediate water circulation; (4) Cenozoic to recent paleoceanography including influence of the Tasman gateway opening and Indonesian gateway restriction; and (5) the tectonic, volcanic, and depositional history of the NP and MB prior to Gondwana breakup, as well as after separation from India and subsequently Antarctica.



Brian Huber & Richard Hobbs

氏名 所属 役職 乗船中の役割
黒田潤一郎 東京大学 准教授 Sedimentologist
長谷川卓 金沢大学 教授 Inorganic/Organic geochemist
Maria Luisa Tejada JAMSTEC 研究員 Petrologist



  1. プレクルーズトレーニング:乗船前の戦略会議やスキルアップトレーニング
  2. 乗船旅費:乗下船に関わる旅費支援
  3. アフタークルーズワーク:モラトリアム期間中の分析
  4. 乗船後研究:下船後最長3年で行う研究の研究費



海洋研究開発機構 横浜研究所内
E-mail: infoの後に@j-desc.org
Tel: 045-778-5703







2016年11月21日(月 追加募集〆切 締め切りました

Information Webinar

August 3, 2016 at 4:00 pm EDT

To learn more about the scientific objectives of the expedition, life at sea, and how to apply to sail, please join us for a web-based seminar on Friday, July 29, 2016 at 12:00 pm EDT.
To participate in the webinar, you will need access to the internet with a computer equipped with a microphone and speaker. To register, please visit https://attendee.gotowebinar.com/register/5362967296379684612.






レポート13(2017年11月30日)>>A Journey Back in Time to Gondwanaland: IODP Expedition 369
レポート6(2017年10月19日)>>Further back in time to Naturaliste Plateau and Mentelle Basin, Indian Ocean
レポート5(2017年10月19日)>>Core on Deck!
レポート4(2017年10月18日)>>Transit to the Great Australian Bight
レポート3(2017年10月18日)>>A Journey Back in Time to Gondwanaland: IODP Expedition 369

レポート13:A Journey Back in Time to Gondwanaland: IODP Expedition 369

Maria Luisa Tejada(海洋研究開発機構 研究員)

Site U1513 and a haunting past

IODP Expedition finished off the two-month long quest for answers about the ocean conditions during and after the break-up of Gondwanaland at Site U1513 in the Naturaliste Plateau, Indian Ocean. The rough sea condition in the area reminds of a potential problem for the drilling operation here. Do you know that this site has been visited by ocean drilling before but did not reach deep enough because of the rough seas?

Yes. There was drilling done here before in 1972, forty-five years ago, during the Deep-Sea Drilling Project (DSDP) Leg 26. It was Site 258. Coincidentally, our drilling schedule (October 18-31) was almost the same time of the year that DSDP Leg 26 was also in this area. Caption from DSDP Report Site 258 reads:

Site 258 was approached from the northwest. Our approach was somewhat delayed by very strong head- winds and swells. At one time on passage from Site 257 our forward speed was reduced to 6.9 knots from a nominal 10 knots. Arriving at a point about 8.05 km (5 miles) northeast of the site, we turned onto a southwesterly course for our final approach, passing over the site in the early afternoon of 25 October. We then turned back over the site and dropped the beacon, while underway at 5 knots, at 1412, 25 October.

and here is the snapshot of the swells during our approach to Site U1513 on October 18, 2017 (photo 1):

Photo 1: Transit and estimated arrival time at the Naturaliste Plateau Site U1513. Note strong winds and rough seas along the way!

Despite the rough seas, the drillers commendably accomplished the drilling preparation and Hole U1513 started at 0340 h after successfully recovering the mudline on October 18th. Seafloor depth was established at 2789 meters and three shallow holes (U1513-A, -B, -C) were successfully drilled down to 292, 98, and 17 mbsf (meters below sea floor), consecutively by October 24th. By the time the fourth hole started, which is the deepest one for this expedition there was already a precaution for an upcoming bad weather and accompanying high swells, which could badly affect the drilling operations. Four days later, on October 28th, we reached down to 604 mbsf at Hole D and we were WoWing. WoW is the official term for “wait on weather” because the swells picked up to 9-meters!

Could this be the reason why Site 258 only reached down to 525 mbsf? Here’s another caption from the report:

By the morning of 27 October it was quite apparent that the storm was going to pass very close to us and that operations might be somewhat hampered…..
With the goodwill of the drilling crews, operations were continued into extreme weather conditions. The ship performed excellently and at the time we, reluctantly, suspended operations we were operating in winds of 50-60 mph and breaking 15- 20-foot seas. In these conditions there was simply not enough power available to hold the ship on site over the hole and at the same time work pipe, besides which the motion of the ship was such that it was becoming impossible to work safely on the rig floor. The decision to pull out of the hole was made at 1630 27 October.

Fortunately for this expedition, and owing to the improved technology now, such as the use of FFF (free fall funnel) for hole re-entry purposes, drilling of Site U1513 D was resumed on October 30th and successfully reached down to 756 mbsf, hitting basalts! Basalts are rocks that solidified from magma that comes out where there is rifting or drifting away of tectonic plates; that is, when Gondwanaland started breaking apart. These rocks then will give the badly needed information on the rifting event: when, in how many stages, and, potentially, the how and why…

Here’s the new link for the Gondwanaland breakup and IODP Expedition 369:
The future of plate tectonics research: The International Ocean Discovery Program


Fun and Thanksgiving

After drilling at three other sites in the Mentelle Basin and Naturaliste Plateau, the last and deepest hole (Hole E) was drilled again at Site U1513 for logging purposes, coring down through the basalts again to 770 mbsf on November 19-22. By this time, we have really journeyed back to Gondwanaland. It was just fitting that the end of the expedition was celebrated with fun and thanksgiving (see photos)….

Photos 2: Thanksgiving Day decorations and dinner at the galley.
Photos 3: Desserts and many kinds of bread
Photos 4: Helideck field day games and fun! A: Egg-on-a-spoon race; B to D: Dr. Cup-hands (wearing a lab gown with both of your hands inside the cup!) relay; E and F: Cookie Face (moving a cookie from your forehead to your mouth and catching it) and winner; G and H: Cottonball Race (or picking up cotton balls with your face) and filling up a cup within 2 minutes!


黒田潤一郎(東京大学大気海洋研究所 准教授)





ワールド・ピンポン・チャンピオンシップ、アメリカ vs. ブラジルの一戦。


ちなみに、ルームランナーは和製英語で通じません。トレッドミルTreadmill です。








黒田潤一郎(東京大学大気海洋研究所 准教授)

IODP Exp. 369 は終盤戦にさしかかっております。





若手の会との中継ではIODP Exp. 356に乗船された石輪さん(国立極地研)が、金沢大学との中継ではIODP Exp. 363 に乗船された佐川さんが日本側の中継を担当してくださり、補足説明もばっちり執り行っていただきました。お陰で、中継は滞りなく進みました。



金沢大学との中継でChem Lab の説明をするブロードキャスター・タカ(長谷川さん)。 タブレット画面には金沢大学の講義室の様子が見えます。


黒田潤一郎(東京大学大気海洋研究所 准教授)




テキサス大学のガブリエル君と。なぜか私を Employee of the month に選んでくれました。月間社員賞。もちろん非公認です。





長谷川卓(金沢大学 教授)

現在第6週の後半に差し掛かりました。スタッフサイエンティストのKaraさんは、週の前半にしきりに「魔の第六週」を強調してました。そろそろ疲れてくるし、ストレスも溜まってきて、簡単な間違いをしてしまったり、怒りっぽくなったりするということで、精神的な壁なのかもしれません。実は私が前回、ODP Leg 208でJRに乗船したときには、これが結構顕著でした。自分の研究室でない場所に入っていくと、「自分の持ち場で自分のことをやれ!」みたいに怒鳴られたこともありました(結構怖いです。本気で機嫌が悪くなっているので)。しかし今回の航海は若手が多いこともあり、研究室は比較的穏やかです。まとめ役の共同主席研究者とスタッフサイエンティストのお三方が結構疲れている様子です。









黒田潤一郎(東京大学大気海洋研究所 助教授)

IODP 第369次航海乗船研究者の黒田です。












黒田潤一郎(東京大学大気海洋研究所 助教授)














レポート6:Further back in time to Naturaliste Plateau and Mentelle Basin, Indian Ocean

Maria Luisa Tejada(海洋研究開発機構 研究員)

Westward, the JOIDES Resolution travels further back in time to the Naturaliste Plateau and Mentelle Basin. According to the plate reconstructions, (https://vimeo.com/198122084) and (http://vimeo.com/user18925575/gondwana), the breaking up of eastern Gondwana progressed from west to east, with India breaking away first from Australia-Antarctica ~130 million years ago. It was not after ~40 million years later that Australia and Antarctica started to separate.

So, what do we expect to see in this area? Three drill holes are planned (Photo 1). Drilling through the rock record in these three holes is expected to uncover the changing conditions from the open ocean that we see today back to when the seas were small and India was closer to Australia. It is like playing the plate reconstruction backwards. Try it!

Meanwhile, scientists had to wait. It takes four days before JOIDES Resolution gets there. The journey started calmly with a normal speed of ~10.5 knots but shortly after, we were navigating rough seas again slowing down the ship’s speed (compare Photos 1 and 2).  However, there’s work to do! Although the drilling operation finished, there was still a back log of cores to be processed, described and sampled. After every core was processed and stowed away, scientists have a responsibility to write up the results of each laboratory group and come up with a Site Report. The Site Report is important because it will be the archived record of the drilling expedition for years to come. Each group described their observations and measurements to form the different chapters of the Site Report. These chapters were reviewed and compiled by the Expedition Manager and the Co-Chiefs. Science meetings were conducted in 12-hour intervals to report and discuss the different results at Site U1512.

Photo 1: Departure from Site 1512 and transit to the Naturaliste Plateau and Mentelle Basin.

Photo 2: Strong winds and rough seas on the way.

Photo 3: Scientist present and discuss results during the science meeting. Photo credit: Carl Richter

How about some fun?

Well, there was 1) a lottery and a winner for guessing which core will recover a geologic time boundary at Site U1512; 2) there was a barbecue and lunch outside at the beach tables; and 3) more chance to watch great sunrise and sunsets!

Photos 4: Having fun! Top 2 photos: Lottery and winner with a custom-made cake as prize; Left: barbecue and eating out in the sun; Right: watching great sunrise and sunset. Photo credits: Jun Kuroda, Marissa Tejada, and Kirsty Edgar.


レポート5:Core on Deck!

Maria Luisa Tejada(海洋研究開発機構 研究員)

JOIDES Resolution arrived at the first drilling site, U1512, on October 7 at 0500 h at the Great Australian Bight (Photo 1). Preparation for drilling was underway right after at 0530 h. During the drilling operation, the ship had to maintain its position at one spot as much as possible.

Photo 1: Arrival at proposed Site WCED-4A, now drilled as IODP Site 1512.

How does the ship keep still at its position during drilling operations? As soon as the ship arrives at the drill site location, ten additional retractable thrusters are pushed down below the ship (see the ship’s profile at www.joidesresolution.org). These and the two non-retractable ones (total of twelve thrusters) form part of the computer-controlled dynamic positioning (DP) system that keeps the vessel in the same position for as long as needed during drilling operation.

Besides the navigational and the catering crew, a separate crew, the Drillers, is an important component of the JOIDES Resolution. Once the ship secured its position above the drill site, they started putting together the bottom hole assembly (used to drill through into the rocks below the sea floor) and the drill string (consisting of a series of core barrels) that connects the bottom hole assembly to the ship). Then, the barrels were lined with plastic tubes (core liners) which will contain the recovered core from drilling. To the scientists, it appeared all this drilling preparation was done so easily and smoothly. Everyone watched with excitement and expectation for the first core of the expedition to arrive on deck. However, it took several hours until the actual digging to recover rock cores started (at 2120 h) because the actual depth of the seafloor had to be determined beforehand. For this site, the seafloor depth was tagged at 3070 meters below sea level. Shortly after, “CORE ON DECK” was heard! The first core was on deck at 2240 h.

Photos 2: Drillers prepare the bottom hole assembly and drill string.
Photos 3: Scientists and IODP Personnel waiting for the first core of the expedition.

Then, the core flow started….

First, the drillers cut a small portion from the bottom of the core that includes the “core catcher” and handed it over to an IODP personnel. The core catcher prevents the rocks drilled from slipping down the core liner as it transits to the surface. A ~10-cm long portion of this core catcher was given to the paleontologists for determination of the “age” or time when the rocks were deposited on the ocean floor. Then, the remaining longer part of the core was carried by several other IODP staff to the “cat walk”, where the core is curated (cut into 150 m long sections and sample labels added).

Photos 4: Core flow from top to bottom, left to right: From rig floor to catwalk; paleontology sample (PAL) is taken from the core catcher and a portion given to paleontologists; rest of the core cut into 150 cm-long sections; core sections are archived using laser engraving and tape labels.

Four hours later (the time it usually takes for the cores to reach the same temperature as the laboratory temperature), physical property measurements on the whole cores were conducted, including natural gamma ray (NGR), density, and magnetic susceptibility. Then the cores were split into two halves: working half and archive half. The archive half goes through non-destructive measurements including imaging, core description, and paleomagnetism measurements. They become the permanent record of the drilling expedition. The working half goes through destructive tests and is also the source of samples taken both for shipboard analysis during the expedition and for post-cruise studies of participating scientists after the expedition.

Photos 5: Laboratory core flow. Top to bottom: physical properties measurement on whole core, splitting into working and archive halves, sampling and destructive measurements on working half. The flags of different colors tell scientists what kind of sample to take for shipboard analyses.
Photos 6: Core processing and description flow for archive half: imaging, magnetic susceptibility measurement, description.

The core and laboratory flow procedures were repeated for each core recovered. The activities involved kept the scientists busy but some still found some time to read books, go to the gym and have their own leisure time.

Drilling at Site U1512 reached 700 meters depth below sea floor with 73 cores drilled. Recovery was excellent for most of the cores, with only a few (17 cores) with less than 90% recovery. After the last core was drilled on October 13, downhole geophysical logging started shortly. Downhole logging measures the physical properties of the rocks inside the hole to get some information about the original condition of the rock formation at depth. Drilling operations at Site U1512 finished at 2255 h, October 14.

The expedition moves on to the Naturaliste Plateau. The ship left Site U1512 at 2300 h on October 14.


レポート4:Transit to the Great Australian Bight

Maria Luisa Tejada(海洋研究開発機構 研究員)

D/V JOIDES resolution left Hobart Port, Australia, in the early morning (0710) of October 1, 2017 for the first drilling site, WCED-4A (now known as IODP Site U1512), in the Great Australian Bight. This drill site is believed to contain records of the climate and ocean conditions back to when Australia and Antarctica were rifted apart but not fully separated yet. How did the scientists spend their time on board during this transit?

The first two days of the transit were spent adjusting to the ship motion. It was not easy to sleep when the ship was navigating heavy winds and high swells! Many of the scientists had motion sickness. Luckily there is always a doctor on board JOIDES Resolution and, for this expedition, he prepared more than enough medicine for motion (or sea) sickness. The scientists also had to adjust to work on a 12-hour shift. They were divided into two groups: one group starts work at 12 noon and finishes at 12 midnight; the second group stays awake to work from midnight to noon the next day. By the time the ship arrives at the first drilling site, everybody is expected to work during their respective shift time.

Oh, and there was the boat drill right after departure from Hobart! Everyone was assigned to one of the life boats on the ship. There are four big lifeboats on the ship, each with a capacity of ~70 people. This is more than double the number of the scientists and the crew onboard the ship at any time, which is 120-125. The life boat drill requires everyone to participate and will happen once every week for the duration of the expedition.

Departure from Hobart: port-side stair retracted.

Departure from Hobart: one of two tugboats pulling the ship to help it assume its position for navigation out of the port.

There was never a dull moment during the transit. The ship is also a floating laboratory! There are a lot of processing and data gathering going on during each science expedition. Depending on the task they will do during the expedition, each scientist was assigned a laboratory group. These are the paleontologists who study organisms and the time when they existed or perished; the core description group who will document the rocks by imaging and recording their minerals, rock fragments, and organism contents on pre-designed templates; the group that measures the physical properties of the rocks; the group that measures the paleo or past magnetism orientation preserved in rocks; the geochemists that determines the composition of seawater and amount of organic materials preserved in the pores between grains that compose the rocks; and the group that will establish the relationship of rocks drilled from one drill site to another. Each group was required to prepare a document that describes the methods, tools, and equipment that they will use to study the materials that will be recovered during this expedition. Everyone familiarized themselves to the core flow, that is, the sequence of curation and measurements that each core undergoes before it gets boxed and stowed away in the ship’s temporary repository for post-expedition research. All the science and core flow activities are coordinated by a team composed of the Expedition Manager and two Co-Chief Scientists, with the assistance of IODP laboratory personnel.

Of course, there was some time for leisure activities, like going to the gym, or watching movies, or bathing in the sun while reading a book, after the work shift was over. Scientists were also booked in small groups for a ship tour to see the operations of the vessel. The tour included the navigation bridge, GDP room, rig floor, driller’s shop, engine room, and ended at the helideck. For a virtual ship tour, see www.joidesresolution.org

The transit time was also an opportunity for the scientists to familiarize with their group mates and exchange their research plan after the expedition, with one goal of understanding the cause and timing of the break up among Australia, Antarctica, and India and the consequences of this event on past climate, ocean condition and circulation changes. Three scientists gave short talks about their studies and research interests.

Scientists endure the cold to witness the departure from Hobart port.

Sailing ahead to the Great Australian Bight!

The transit time was also an opportunity for the scientists to familiarize with their group mates and exchange their research plan after the expedition, with one goal of understanding the cause and timing of the break up among Australia, Antarctica, and India and the consequences of this event on past climate, ocean condition and circulation changes. Three scientists gave short talks about their studies and research interests.

Strong winds during departure!

The transit time was also an opportunity for the scientists to familiarize with their group mates and exchange their research plan after the expedition, with one goal of understanding the cause and timing of the break up among Australia, Antarctica, and India and the consequences of this event on past climate, ocean condition and circulation changes. Three scientists gave short talks about their studies and research interests.

Ship tour


Science talk by Taka Hasegawa.


レポート3:A Journey Back in Time to Gondwanaland: IODP Expedition 369

Maria Luisa Tejada(海洋研究開発機構 研究員)

Millions of years ago, when the oceans were still united as a Panthalassa Ocean, there was a land mass called Gondwanaland. This land mass eventually broke up and separated, forming scattered smaller land masses or continents that we all know today (https://vimeo.com/198122084) and (http://vimeo.com/user18925575/gondwana).
Australia, Antarctica, and India were once continuous and formed the eastern Gondwanaland!  Why are they now separated by the Indian Ocean and the Southern Ocean? How did this happen? And when did it happen? How did climate and ocean conditions changed during the opening and closing of the water bodies that resulted from the movement of these land masses?

To answer these questions, scientists from different countries like Japan, Korea, China, Australia, New Zealand, S. America, USA, France, Italy, and U.K. came together to investigate this significant event in the Earth’s history. The scientists will journey back in time to the area where it all started, on board one of the world’s largest drilling research vessels, D/V JOIDES Resolution (photo 1; www.joidesresolution.org ). This expedition, dubbed International Ocean Discovery Program (IODP) Expedition 369, sailed from Hobart to the Great Australian Bight on October 1 and will arrive in Fremantle, Australia on November 26, 2017 (Fig. 1).

Photo 1: JOIDES Resolution at Hobart Port, Australia

Figure 1. Proposed drilling sites (upper) and ports in Australia.

During the expedition, rock cores will be collected from depths of 860 to 3900 meters below sea level to acquire a record of Earth’s history from 90-130 million years ago to recent. A total of 4 sites will be drilled to recover 570 to 1200 meters thick of sedimentary deposit that contain the ancient record of the breakup of the continental masses and the formation of the Indian and Southern Oceans. Scientists will investigate the type of rocks and the organisms that are preserved in them. The rocks will give information about the development of the break up, like pages of the Earth’s diary. The organisms will reflect the changing condition of the newly formed oceans at certain stages during the breaking away of the continents from each other.

This scientific quest is expected to be fully documented by three education specialists on board who are also responsible for conducting ship-to-shore communication between scientists and schools or organizations who are interested to see the different sections of the research vessel and the activities during a scientific expedition like this. For details on how to contact them, see www.joidesresolution.org.


長谷川卓(金沢大学 教授)

10月10日、Joides Resolutionのミッションが始まって、2週間になります。乗船、様々な講習、船からの脱出訓練など様々な体験を経てここまで来ました。長谷川は移動期間中にサイエンスセミナーでニュージーランドの白亜系OAE2期の古環境変遷を有機地球科学の観点から研究した結果を紹介しました。同じ南半球高緯度域の研究とあって、多くの乗船者に興味を持ってもらうことができました。








黒田潤一郎(東京大学大気海洋研究所 准教授)



日本からは、JAMSTECのMarissa Tejadaさん、金沢大学の長谷川卓さんと私の三名が乗船します。J-DESCのHPで船内の様子をお伝えしていきます。

我々三名は9月25日にタスマニア大学の海洋研究所IMASで元・東京大学のMike Coffin先生が主催するセミナーにお呼びいただき、航海に参加する目的や研究内容について講演しました。ホバートはタスマニア州都の港町で、オーストラリア第二の歴史を持つ美しい街です。タスマニアの天気はめまぐるしく変わり、雨後の晴れ間には虹が輝き、山は雪化粧。夜には澄んだ空に南十字星が瞬きます。

タスマニア大学IMASでMike Coffin先生と












  • プレクルーズトレーニング
  • 乗船
カテゴリー: IODP Expedition パーマリンク