Terreno Resources Corp. Provides Update on Exploration Activities in Argentina

Terreno Resources Corp. ("Terreno" or the "Company") (TSX VENTURE:TNO) is
pleased to provide an update on exploration activities in Argentina. Terreno has
three advanced exploration projects located in Argentina; "La Poposa" a high
sulphidation gold copper project located in San Juan province, "Socompa" a
porphyry copper gold project located in Salta, and "Trigal" a high sulphidation
gold silver project located adjacent to Golden Mineral's El Quevar project also
in Salta Province.


La Poposa is a high sulphidation gold system located in the Pre-cordillera of
Argentina in San Juan province. The project is located in the same belt as the
Valadero and El Indio gold mines, and is located approximately 50 km to the
south-south-east of Malbex Resources' Del Carmen project. La Poposa was explored
in the 1990's by a number of companies looking for a large disseminated gold
system. Extensive low grade gold was discovered in a massive silica altered
rhyolite. Drilling by previous groups was limited and very shallow in nature.
The size of the alteration system is very large (approximately 6 km by 3 km) and
Terreno's geologists feel the project has not been adequately explored and has
potential for both structurally controlled mineralisation at relatively shallow
depths and a porphyry style copper gold system at greater depth.


Work by Terreno Resources at La Poposa commenced in Q4 2010 and has consisted of
geological mapping, trenching with continuous rock chip sampling and CSAMT
geophysics. In addition, a 7-line, Titan 24 DCIP and MT survey is planned for
April 2011. The geological mapping has led to a new interpretation on the
geology which highlights the potential for high grade feeder systems, hosted by
andesitic volcanics, occurring beneath a higher level low grade massive silica
altered rhyolite cap. Initial trenching has identified areas with low grade gold
over up to 50 meters which could occur above such feeder systems. Results from
the first five trenches are shown in Table 1 and included 54 meters @ 0.76 g/t
Au from trench 3. Results from 10 additional trenches are pending.


Table 1 - Trench Results from the La Poposa Project



------------------------------------------------------
Trench            From          To            Au (g/t)
------------------------------------------------------
                     3           6           3m @ 0.11
TA-01               82          84           2m @ 0.11
                    90          92           2m @ 0.21
------------------------------------------------------
TA-02               20          22           2m @ 0.16
------------------------------------------------------
TA-03                0          31          31m @ 0.66
                    45          99          54m @ 0.76
------------------------------------------------------
TA-04                1         3.3         2.3m @ 0.12
                   7.3        27.5         20.2 @ 0.17
------------------------------------------------------
                     3           6           3m @ 0.12
                                    ------------------
                    36        52.7        16.7m @ 0.14
                                    ------------------
TA-05               64          66           2m @ 0.14
                                    ------------------
                    81          85           4m @ 0.28
                                    ------------------
                   104         142          38m @ 0.27
------------------------------------------------------



"Terreno is very encouraged by what we have discovered at La Poposa," stated
Peter Mullens, VP Exploration. "A new interpretation on the geology indicates
that the massive silicified altered rhyolite could be a barren silica cap to
higher grade structurally controlled mineralisation. The best target is located
within andesitic volcanics located at a depth of about 100 meters below the
massive silica cap. This is a similar geological setting to a number of low
sulphidation epithermal systems located in South America such as Cerro Negro in
Argentina and potentially Fruta Del Mar located in Ecuador. In both of these
cases, massive silica flooding occurs above the high grade structural feeders
which occur in massive andesites. Andesite is a very good host rock for
epithermal mineralisation as it is both a brittle structural trap and a chemical
trap due to the mafic nature of the rock. The massive silica flooding occurring
above the high grade feeder zones is barren in both examples."


Mr. Mullens continued, "In addition to this structurally controlled target,
Terreno is exploring for a deeper porphyry style target which could be the
source for the high sulphidation alteration system. With the results from our
geophysics programs we expect to generate several targets which we plan to start
drilling in late Q3 2011, weather permitting."


Work is also continuing at the Socompa and Trigal projects, both located in
Salta province. This work consists of geological mapping, sampling and road
construction. CSAMT geophysics is planned for September 2011 following the South
American winter. Drilling is planned for December 2011 until March 2012. Both
projects are located very favourably within existing mineralised belts in the
Andean Cordillera and contain extensive porphyry and epithermal style
alteration.


The Qualified Person for Terreno's projects is Mr. Peter Mullens, who is a
member of the Australian Institute of Mining and Metallurgy. Mr. Mullens has
reviewed and approved the technical content of this release.


Chemical analysis was completed by ALS Chemex Laboratories using Au-ICP22 for
gold and ME-MS41 for other elements.


About Terreno Resources

Terreno, meaning "of the earth" in Spanish, represents the Company's focus on
natural resource opportunity development in South America. Terreno has option
agreements on three exploration projects in Argentina; La Poposa (formerly
referred to as Amarillo) in San Juan, Socompa and Trigal in Salta. All three
projects boast significant alteration systems and have the potential for copper,
gold and silver mineralization. For more information, please visit
www.terrenoresources.com.


To view the map associated with this press release, please visit the following
link: http://media3.marketwire.com/docs/Terreno_map.pdf.
Terreno Resources Corp. (TSXV:TNO)
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