Wooster Geologist high in the air!

1 Fig 7 062016Editor’s note: The following post is from guest blogger Annette Hilton (’17) about her extraordinary research experiences this summer. Annette gets around: You may remember her post last summer from the American Museum of Natural History.

This summer I have the privilege of working an REU (Research Experience for Undergraduates) internship with NASA Student Airborne Research Program (NASA SARP). The program has employed 32 undergraduates from all over the United States to explore airborne Earth science with four amazing mentors, all associated with NASA and universities from around the USA.

2 Seal 062016The program takes place in southern California—the first week spent in Palmdale, CA, where the NASA Armstrong Flight Research Center is located. The second week SARP is split into four teams of eight students for specific research areas—Coastal Ocean and Remote Sensing, Forest and Remote Sensing, Atmospheric Chemistry, and Whole Air Sampling—and team field trips. The remaining six weeks will be spent in Irvine, on the UC Irvine campus, for data analysis.

Fig 1 062016Figure 1. Armstrong Flight Research Center, where all of NASA’s Earth Science airborne campaigns take place. The hangar pictured above houses several planes, including the DC-8.

SARP flies two missions on board the DC-8, NASA’s airborne laboratory. On Saturday June 18th I flew on board the DC-8 for a six hour flight over the Central Valley and Santa Barbara Channel.

Fig 2 062016Figure 2. Map of flight plan for the DC-8 on June 18th. The red circle indicates an area we had to unexpectedly plan around, as President Obama was camping with his family in Yosemite. This map does not include our added flight path above the Santa Barbara channel.

Fig 3 062016Figure 3. The DC-8 outside the hangar at NASA Armstrong Flight Research Center.

Fig 4 062016Figure 4. As you can see, the plane has been heavily modified for all the scientific equipment it houses! Most instruments on board sample and analyze data real time.

Fig 5 062016Figure 5. Inside the DC-8. The aircraft had just returned from a six week mission in South Korea, called KORUS-AQ, an international cooperative air quality field study. Because of this, the DC-8 was decked out with all the KORUS-AQ instruments, which SARP was able to have access to! When I was on board there were at least 40 different instruments, as well as most of the KORUS-AQ team.

Fig 6 062016Figure 6. More scientific goodies!

During the six hour flight we primarily flew in the Planetary Boundary Layer (PBL) (~1000-4000 ft altitude) in order to be close to emissions over the Central Valley. Our flight plan included flyovers of large dairy farms, oil fields, agricultural fields, and the Santa Barbara channel. We flew a few missed approaches where we got to about 40 feet above ground before flying back up to the PBL in areas of particular interest as well as a vertical spiral to create a profile of the atmosphere. I was even able to ride for 20 minutes in the cockpit and speak briefly with the pilots! Luckily, I was not one of the students on board who became ill during the flight. Flying in the PBL is very hot and a bumpy ride!

Fig 8 062016Figure 7. Outside my window in the PBL over the Central Valley.

Fig 9 062016Figure 8. Outside my window over the Santa Barbara channel, in smoke from the Sherpa Wildfire.

The first SARP flight on June 17th flew over the Los Angeles Basin. In addition, SARP has access to another one of NASA’s planes, the ER-2 (a pilot only plane), which will fly two missions for SARP above the same areas the DC-8 flew in order to obtain high altitude data (the ER-2 can fly up to 70,000 ft). SARP will also have access to the data obtained during the KORUS-AQ mission, as well as ground-based data during the second week field trips. My group, Coastal Ocean and Remote Sensing, will be traveling to Santa Barbara for a day cruise out on the channel to collect water samples. These data will eventually be used to calibrate and validate both airborne and satellite data obtained during SARP over the coastal area.

Fig 10 062016Figure 9. The Coastal Ocean and Remote Sensing group in front of the DC-8.

I am very excited to be in California this summer working with a wonderful group of peers and mentors at SARP. SARP has access to a plethora of data which I will utilize to design my own research project for the summer, which I also hope to continue during my senior independent study at Wooster.

A shout out to all the wonderful professors in the Wooster Geology Department who I owe many thanks to for their help in being able to participate in such an amazing experience! Thank you for all you do.

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Wooster Geologists in England: Team Dorset

Cassidy Bridport Sands 060716Cassidy Jester (’17) and I have now finished our fieldwork in southern England this month. Cassidy traveled through Britain afterwards, and I went on to London and the Natural History Museum. It was all a success thanks to my friends and colleagues Tim Palmer and Paul Taylor, with critical help from our new friends Bob Chandler and John Whicher. Our daily blog entries can be accessed at the UK2016 tag.

Team Dorset 0n Hive BeachTim Palmer, Cassidy Jester (’17) and Mark Wilson on Hive Beach, Burton Bradstock, Dorset, England.

Here is a table of our locality information for reference:

GPS# Latitude Longitude Location
138 50.96268903 -2.503268039 Frogden Quarry
139 50.96319797 -2.501848983 Frogden Quarry older
140 50.93710503 -2.601833018 Babylon Hill
141 50.94292902 -2.556813983 Louse Hill
142 50.79496597 -2.71623401 Coombe Quarry, Mapperton
143 50.70015801 -2.734380998 Hive Beach, Burton Bradstock
145 50.81626003 -2.771674013 Horn Park
146 50.70154396 -2.737065973 Burton Bradstock snuffboxes
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Final day at The Natural History Museum … and one more Jurassic snuff-box

1 Chandler snuff-box cutLondon, England — My last day in London was spent working on GSA abstracts and examining one last ferruginous oncoid (“snuff-box”) from the Jurassic (Bajocian) of southern England. Bob Chandler donated to the cause a large discoidal snuff-box. We cut it (cross-section through the center shown above) and revealed its intricate internal structure.

2 Chandler snuff-box nucleusThe typical limestone nucleus is smaller than I expected, but it still shows typical features such as bioerosion.

3 Snuff-box horn 061716This specimen has beautifully-developed “horns” around the periphery. They are made of laminae not connected to the central cortex. Paul Taylor suggested that they form when the snuff-box is no long being moved about. Nice specimen. Cassidy Jester (’17) will have much to figure out in her Independent Study focused on these objects.

I’ve had a great and productive time on this expedition to England. Thank you again to my amigos Tim Palmer and Paul Taylor, as well as John Whicher, Bob Chandler and Consuelo Sendino. Science marches on.

Addendum: This is the way I like my Tube stations — empty! Take me home, District Line to Paddington. Saturday, June 18, 5:08 a.m.

Fulham Broadway tube station at 0508

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Wooster’s Fossils of the Week: Symbiotic interactions in the Silurian of Baltica

EcclimadictyonThis week’s fossils are from work Olev Vinn (University of Tartu, Estonia) and I did last summer that is soon to appear in the journal Lethaia. (An early electronic version of the manuscript has been available since November.) After numerous smaller studies describing symbiotic relationships recorded in Silurian fossils in the paleocontinent Baltica, we wrote a summary paper under Olev’s leadership. All the images are take by Olev and in the paper itself. I love this kind of study because it is about fossils as living, interacting organisms, not just static sets of characteristics.

For example, the top image is of the stromatoporoid Ecclimadictyon astrolaxum (a kind of hard sponge) with embedded rugosan corals (Palaeophyllum, with arrows) from the Jaagarahu Formation (Sheinwoodian) exposed at Abula cliff, Saaremaa Island, Estonia. The stromatoporoid and corals were growing together, each having their particular needs met and maybe even enhanced by the other.
syringoporidThe network of holes in this stromatoporoid from the Paadla Formation (Ludfordian) of Katri cliff, Saaremaa, represent the corallites of a syringoporid coral. Again, the coral and sponge formed an intergrown association.
ChaetosalpinxThis is a thin-section view of what was likely a soft-bodied worm (represented by Chaetosalpinx sibiriensis, noted by a white arrow) embedded in the tabulate coral Paleofavosites cf. collatatus from the Muksha Subformation (Homerian), Bagovitsa A, Podolia, Ukraine. Again, the worm was embedded in the living tissues of the host.

We found 13 such symbiotic associations in the Silurian of Baltica. Most of these interactions involved large skeletal organisms like stromatoporoids and corals, which provided stable hosts for smaller sessile filter-feeders and micro-predators. This work is part of a larger study looking at evolutionary trends in symbiotic associations during the Paleozoic.

References:

Tapanila, L. 2005. Palaeoecology and diversity of endosymbionts in Palaeozoic marine invertebrates: trace fossil evidence. Lethaia 38: 89–99.

Vinn, O. and Wilson, M.A. 2016. Symbiotic interactions in the Silurian of Baltica. Lethaia 49: 413–420.

Vinn, O., Wilson, M.A. and Motus, M.-A. 2014. Symbiotic endobiont biofacies in the Silurian of Baltica. Palaeogeography, Palaeoclimatology, Palaeoecology 404: 24–29.

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Research in a paleontological paradise

1 NHM front 061616London, England — If any center of scientific research can be sacred, the Natural History Museum of London is a holy of holies for paleontology. Its deep history, highly skilled researchers and staff, and magnificent architecture makes it a very special place. As I wrote before, it is a secular cathedral of science, particularly life science.

2 NHM cathedral of scienceIt is no accident the design of this building reflects a place of worship. Who do you think the white figure on the raised platform in the center is? He might as well be sitting on the altar.

3 Darwin presidingOf course! A portrait on Darwin’s upper left, not visible here and probably rarely noticed, is of his colleague Alfred Russel Wallace.

4 Darwin's NHM viewThis is Darwin’s view of the main hall and entrance of the museum. Six million visitors per year pass under his gaze.

5 Paul and SEM 061616This morning Paul and I worked with a scanning electron microscope to study particular fossils we had set aside for closer examination. Paul is the best scanning electron microscopist I have met.

6 SEM stageThis is the open stage and chamber of the SEM, with a brachiopod fixed in place by Paul for scanning. It is a complicated apparatus that can move the specimen in almost all directions in a vacuum under the electron beam.

7 Cortex pdt19574The first specimen we worked with was one of the Jurassic snuff-boxes. This is part of Cassidy Jester’s Independent Study project and her continuing research with Tim Palmer and me. Paul and I are mystified by the pattern we see here in the cortex of the snuff-box.

8 Ooid pdt19575These are two ferruginous ooids embedded in the cortex of the snuff-box. They show exactly the same mysterious irregular platy objects. Tim Palmer suggests they may be limonite, which is amorphous (without crystals). We’ll test that idea later with mineralogical and elemental analysis.

9 Jeffrey Thompson at NHM 061616I was delighted to see my friend Jeffrey Thompson in the palaeontology section doing research for his dissertation at the University of Southern California. He made an earlier appearance in this blog when he was just a kid.

10 Oscar Mmari and Jubilate Lema in LondonFor lunch I met my former student and veteran of an Independent Study field trip to Israel Oscar Mmari (on the left) and fellow Wooster graduate Jubilate Lema on the right. Both of these young Tanzanians are now making their way in the world. Oscar starts this fall at Imperial College, and Jubilate is an economist working with an investment firm in Johannesburg, South Africa. We had a delightful meal and walk around the museum neighborhood.

11 Dinner view 061616My long day ended with an excellent dinner with Paul and Patricia Taylor at the Swan Restaurant along the Thames River. This was our view from the table. This will all seem a dream in just two days time.

 

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Another day of research at The Natural History Museum, London

1 Mapped brach 061516London, England — I spent most of my museum time today at a keyboard, but in a splendid and collegial setting. Very productive and stimulating conversations with Paul Taylor and Consuelo Sendino, but mostly screen time. I drew little map boxes on a brachiopod, for example, as shown above.

2 Screen Shot 2016-06-15 at 2.23.30 PMI also used Image J to measure cell sizes, as shown in the above screen shot. More on what this is about tomorrow.

3 Winchendon Road viewFinally, I thought I’d share the view from my attic window of Winchendon Street. I think I hear and see every flight in and out of Heathrow!

4 London helicopterIncluding police helicopters. Often.

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A day at the Natural History Museum in London

1 Drawer of brachiopodsLondon, England — My first full day at The Natural History Museum in London was interesting and inspiring as always, but it did have its tedium. This drawer of Ordovician brachiopods, for example. I scanned each with my handlens in the dim lighting looking for a particular kind of encruster.

2 Drawers of brachiopodsDrawer after drawer. Saw many curious fossils, but not one example of what I was looking for. Not an uncommon experience!

3 Harry photographing 061416One of the best parts of a museum visit is meeting skilled staff. Harry Taylor is a master photographer of fossils. Paul Taylor and I took him a fossil this morning and he immediately created a superb image for our work. In my inexpert photograph above, what looks like a blast furnace behind the camera is his lighting and flash system.

4 Harry Paul photographyHarry and Paul discuss the image on screen.

5 Bryo copyHere is a small version of the final result of Harry’s artistry. The original file is 111 megabytes! This is a brachiopod (Rafinesquina ponderosa) from the Cincinnatian rocks of southern Ohio. It is encrusted with something special I’ll describe in a later post. We’ll use this high-resolution image for detailed mapping of this surface.

6 Emanuela Di Martino SEM 061416Paul and I visited our colleague Emanuela Di Martino to congratulate her on Italy’s recent win in the Euro 2016 football tournament. She is operating the Scanning Electron Microscope (SEM) Paul and I will be using in two days. I’ve sat here for many hours scanning specimens with Paul.

7 Tony Wighton cuttingPaul and I had a bryozoan we wanted to cut in half to study its interior. Tony Wighton immediately sliced it for us.

8 Tony Wighton polishingTony then gave each half a mirror finish, producing spectacular specimens that considerably enhance the value of the collections.

It was a good day at the museum. The rain stopped long enough for us to get fresh hamburgers at the nearby open market for lunch, and then we had drinks at the Victoria & Albert Museum next door. I don’t take any of this for granted!

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Team Dorset in transit

1 Bristol station 061316Bristol to London, England — Cassidy Jester (’17) and I returned to the Bristol train station (above) on our way to London. We grabbed a smidgen of geology along the way:

2 Bristol station stoneThis common stone in the train station looked familiar. It turns out to be the same Triassic wadi deposit I saw with Tim Palmer in Wales last year. The gray clasts in this breccia are from the Carboniferous Limestone.

3 Cassidy in Bristol StationHere is Cassidy ready to board the train for London. All her fieldwork is done and she is soon to be off exploring England, Scotland and Wales with her boyfriend. Nice job, Cassidy!

4 NHM from Exhibition RoadHere is my destination in London: the fantastic Natural History Museum, seen here from Exhibition Road. A cathedral of science.

5 Paul in his office 061316And the mighty Paul Taylor sits in the heart of the museum, surrounded by bryozoans. He has been my very good friend since 1985. I am fortunate again this summer to work with Paul and Tim Palmer — the Three Amigos for 31 years. I will also be working this week with Consuelo Sendino.

6 66 Winchendon RoadFinally, here are my lodgings at 66 Winchendon Road, Fulham, London. I’ve rented the top room (with the roof windows) for the week I’m here.

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Wooster Geologists explore Bristol, England

1 Temple Church interior 585Bristol, England — Cassidy Jester (’17) and I spent the day in Bristol as we await our trip to London tomorrow. We began a rainy, gray morning in the harbor region in museums and historical ships. We were turned away from the Cathedral because it was, naturally enough, Sunday morning. We did get a peek at the finery and costumes of people attending a special service for the Queen’s Pretend 90th Birthday. (Her real birthday being in April. Royals get an extra birthday of their choice, apparently.) From our diverse visits today, I want to present two short pictorials.

Above is an interior view of Temple Church in the Redcliffe district of Bristol, about a block from our hotel. The weather had much improved by the afternoon. Tim Palmer introduced me to this site last year.  This building has been in ruins since the night of November 24, 1940.

2 Temple Church 1940German bombers, during the Bristol Blitz, dropped incendiary bombs on the roof of Temple Church, starting a fire that collapsed the roof, damaged the arcades, and destroyed all the wood furnishings. The building was effectively destroyed, but the ruins were not only left standing, they were reinforced against further collapse.

3 Temple Church 1This is a view of the eastern wall showing the skeletal remains.

4 Temple Church 2The surviving tower.

5 Templar Church in Temple ChurchIn an interesting twist, after the destruction, archaeologists were able to dig into the foundations of Temple Church. The tradition was that the original church building was round. Indeed, round outlines appeared, along with column remnants of a monastery built in the early 12th century by the Order of the Knights Templar. This was a Templar Church in their traditional style evoking the Temple in Jerusalem. Only nine of these round churches were built in England.

6 Queen Square 061216Another site that impressed me was Queen Square. In the center is a statue of King William III (William of Orange, “King Billy”, and the William of “William and Mary”). The square was lively today with a refugee relief concert.

7 Queen Square 1831This is Queen Square on a hot night in 1831. The statue of King Billy has lots of company. Queen Square was the epicenter of the 1831 Bristol Riot over the rejection of a Reform Bill by the House of Lords. At that time only 6000 men of the population of 104,000 were franchised. There was great violence and much destruction that had a deep effect on the nation. The Reform Act was passed the next year.

Two brief Bristol stories!

 

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Wooster Geologists in Bristol, England

1 Bristol Museum and UniversityBristol, England — Cassidy Jester (’17) and I are spending the weekend in Bristol after finishing our fieldwork in Dorset this week. Our travel and lodging arrangements required a couple of days here before we go to London on Monday and then our separate ways. We’ll continue to sort out our specimens, work on a GSA abstract, and explore the city. This afternoon, while waiting for our hotel rooms to open, we walked through the central part of the city to the Bristol City Museum and Art Gallery. It is the building with the pillars on the left. The magnificent tall building on the right is part of the University of Bristol — the part that houses the Earth Sciences Department.

2 Bristol City Museum and Art GalleryThis museum is a wonderful combination of art, history and science, with considerable space devoted to geology and paleontology.

3 Bristol pregnant ichthyosaurAmong the many exhibits, I picked one to share: a pregnant ichthyosaur from the local Jurassic. Note the tiny arrow in the lower left of the skeleton.

4 Bristol ichthyosaur fetusAt the arrow, among the bones of this female ichthyosaur is this hand-sized skeleton of a fetus, direct evidence that ichthyosaurs, though reptiles, gave live birth. Paleontology is so cool.

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